1. Bock R., Schumann W.
Katalog der jahresmittel der magnetischen elemente der observatorien und der stationen, an denen eine zeitlang erdmagnetische beobachtungen stattfanden. Band I. Stationen von +900 bis +550.- Geophysikalisches Institut Potsdam, Abhandlungen, N8, Akademie "Verlag Berlin", 1948.

2. Bock R., Schumann W.
Katalog der jahresmittel der magnetischen elemente der observatorien und der stationen, an denen eine zeitlang erdmagnetische beobachtungen stattfanden. Band II. Stationen von +549 bis +450.- Geophysikalisches Institut Potsdam, Abhandlungen, N9, Akademie "Verlag Berlin", 1948.

3. Bock R., Schumann W.
Katalog der jahresmittel der magnetischen elemente der observatorien und der stationen, an denen eine zeitlang erdmagnetische beobachtungen stattfanden. Band III. Stationen von +449 bis +000.- Geophysikalisches Institut Potsdam, Abhandlungen, N10, Akademie "Verlag Berlin", 1948.

4. Bock R., Schumann W.
Katalog der jahresmittel der magnetischen elemente der observatorien und der stationen, an denen eine zeitlang erdmagnetische beobachtungen stattfanden. Band IV. Stationen von -001 bis -900.- Geophysikalisches Institut Potsdam, Abhandlungen, N11, Akademie "Verlag Berlin", 1948.

5. Annual mean values of geomagnetic elements since 1900.- Goddard Space Flight Center, NASA, Greenbelt, Maryland, 1965.

6. Yukutake T., Paddock W.I., Allen J.H.
Annual mean values of geomagnetic components for selected observatories, 1940-73.- World Data Center A for Solid Earth Geophysics, Report SE-17, Boulder, USA, 1979.

7. Fisher M.P.
Annual mean values of geomagnetic elements since 1941.- Institute of Geological Sciences, Geomagnetic bulletin, N6, London, 1976.

8. Annual mean values of geomagnetic elements 1978. /Catalogue of data from 1813 untiL 1978, or 1979 for a few observatories/.- Institute of Geological Siences, Geomagnetic bulletin, N10, London, 1981.

9. Ivchenko M.P., Belugina B.H.
Catalogue of annual mean values of geomagnetic field in the magnetic observatories from the year 1930 and their changes over time from year to year.- IZMIR AN USSR, Moscow, 1965. (In Russian).

10. Orlov V.P., Ivchenko M.P., Bazarzhapov A.D., Kolomiytseva G.I.
Secular variation of the geomagnetic field for the period of 1960-1965.- IZMIR AN USSR, Moscow, 1968. (In Russian).

11. Orlov V.P., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue IY. /1958-1968/.- IZMIR AN USSR, Moscow, 1969. (In Russian).

12. Orlov V.P., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue Y. /1964-1969/.- IZMIR AN USSR, Moscow, 1970. (In Russian).

13. Orlov V.P., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories since 1960. Issue YI. /1960-1970/.- IZMIR AN USSR, Moscow, 1971. (In Russian).

14. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue YII. /1951-1971/.- IZMIR AN USSR, Moscow, 1972. (In Russian).

15. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue YIII. /1960-1972/.- IZMIR AN USSR, Moscow, 1973. (In Russian).

16. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue IX. /1947-1973/.- IZMIR AN USSR, Moscow, 1974. (In Russian).

17. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories since 1970 Issue X. /1970-1974/.- IZMIR AN USSR, Moscow, 1975. (In Russian).

18. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue XI. /1960-1975/. Supplement.- IZMIR AN USSR, Moscow, 1976. (In Russian).

19. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue XII. /1966-1976/.- IZMIR AN USSR, Moscow, 1977. (In Russian).

20. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue XIY. /1950-1978/.- IZMIR AN USSR, Moscow, 1979. (In Russian).

21. Pushkov A.N., Ivchenko M.P.
Summary tables of annual mean values of the magnetic elements of the global network of magnetic observatories. Issue XY. /1950-1979/.- IZMIR AN USSR, Moscow, 1980. (In Russian).

22. Golovkov V.P., Kolomiytseva G.I., Konyaschenko L.P., Semenova G.M.
Catalogue of annual mean values of the geomagnetic field elements of the world network of magnetic observatories. Issue XYI. /1813-1981/.- IZMIR AN USSR, Moscow, 1983. (In Russian).

23. Golovkov V.P., Dimant E.M., Kolomiytseva G.I.
Summary tables of annual mean values of the geomagnetic field elements of the world network of magnetic observatories. Issue XVII. /1952-1983/.- IZMIR AN USSR, Moscow, 1984. (In Russian).

24. Golovkov V.P., Dimant E.M., Kolomiytseva G.I.
Summary tables of annual mean values of the geomagnetic field elements of the world network of magnetic observatories. Issue XVIII. /1957-1984/.- IZMIR AN USSR, Moscow, 1985. (In Russian).

25. Golovkov V.P., Dimant E.M., Kolomiytseva G.I.
Summary tables of annual mean values of the geomagnetic field elements of the world network of magnetic observatories. Issue XIX. /1970-1985/.- IZMIR AN USSR, Moscow, 1986. (In Russian).

26. The total intensity of the Earth's magnetic force expressed in centimeter-gram-second units. Chart, epoch 1965.0, scale 1:39 000 000 at equator, two-colour.- (U.S.Coast and Geodetic Survey, Royal Greenwich Observatory), U.S.Naval Oceanographic Office, Washington, 1966.

27. The World. Magnetic variation 1970 and annual rates of change. Map, epoch 1970.0, multicolour.- (Geomagnetism Unit, Institute of Geological Sciences at Herstmonceux), Hidrographic Office, Taunton, 1971.

28. World map of the geomagnetic field intensity and its annual changes, epoch 1975. Scale 1:50 000 000 at 0 degrees latitude, two-color.- LO IZMIR AN USSR, 1979. (In Russian).

29. World map of the horizontal component of the geomagnetic field and its annual changes, epoch 1975. Scale 1:50 000 000 at 0 degrees latitude, two-color.- LO IZMIR AN USSR, 1979. (In Russian).

30. World map of magnetic declination and its annual changes, epoch 1975. Scale 1:50 000 000 at 0 degrees latitude, two-color.- LO IZMIR AN USSR, 1979. (In Russian).

31. World map of the vertical component of the geomagnetic field and its annual changes, epoch 1975. Scale 1:50 000 000 at 0 degrees latitude, two-color.- LO IZMIR AN USSR, 1979. (In Russian).

32. The World. Vertical magnetic intensity 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Office, Taunton, 1976.

33. The World. Total magnetic intensity 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Office, Taunton, 1976.

34. The World. Magnetic dip 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Office, Taunton, 1976.

35. The World. East magnetic intensity 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Office, Taunton, 1976.

36. The World. North magnetic intensity 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Office, Taunton, 1976.

37. The World. Horizontal magnetic intensity 1975, and annual rates of change. Map, epoch 1975.0, multicolour.- (Institute of Geological Sciences U.K., U.S.Geological Survey), Hidrographic Institute, Taunton, 1976.

38. The World. Magnetic variation 1980 and annual rates of change. Map, epoch 1980.0, scale 1:43 800 000 at latitude 0 degrees, multicolour.- (Institute of Geological Sciences U.K., U.S. Naval Oceanographic Office), Hidrographic Office, Taunton, 1980.

1. Reilly W.I., Burrows A.L.
The geomagnetic field in New Zealand at epoch 1970.5. /Catalogue with maps of D,H,I,X,Y,Z components and total intensity of the geomagnetic normal field, scale 1:4 000 000, two-colour/.- DSIR, Bulletin 211, Wellington, New Zealand, 1973.

2. Finlayson D.M.
Isomagnetic Maps of the Australian Region for Epoch 1970.0. Report 159 /”Secular Variation at Melbourne/Toolangi Observatory. 1958-1969”/. – BMRGG, Australian Government Publishing Service, Canberra 1973.

1. The polar regions. Magnetic variation 1970 and annual rates of change, map, epoch 1970.0, multicolour.- (Geomagnetism Unit, Institute of Geological Sciences at Herstmonceux), Hidrographic Office, Taunton, 1971.

2. Salino P.A.
Geomagnetic measurements at Argentine Islands 1957-82.- British Antarctic Survey, Cambridge, 1985.

3. Simmons D.A.
Geomagnetic measurements at South Georgia 1975-1982.- British Antarctic Survey, Cambridge, 1985.

1. Geomagnetic secular variation observations in Southern Africa, 1971. /With maps of H,D,Z components and total intensity of the geomagnetic field and their mean annual changes for 1971-1975, scale 1:10 000 000/.- Magnetic Observatory, Council for Scientific and Industrial Research, CSIR Report MAG C5, Hermanus, South Africa, 1976.

2. Geomagnetic secular variation observations in Southern Africa, 1975. /With maps of H,D,Z components and total intensity of the geomagnetic field and their mean annual changes for 1971-1975, scale 1:10 000 000, two-colour/.- Magnetic Observatory of the Council for Scientific and Industrial Research, Report MAG C6, Hermanus, South Africa, 1976.

3. Geomagnetic secular variation observations in Southern Africa, 1980. /With maps of H,D,Z components and total intensity of the geomagnetic field and their mean annual changes for 1975-1980, scale 1:5 000 000, two-colour/.- Magnetic Observatory of the Council for Scientific and Industrial Research, Report MAG C7, Hermanus, South Africa, 1982.

1. Mundt W.
Der charakter der geomagnetischen sakularvariation in Europa im zeitraum von 1950 bis 1970.- Veroffentlichungen des Zentralinstituts fur Physik der Erde, N23, Potsdam, 1973.

2. Eleman F., Borg K.
Geomagnetic maps of Scandinavia 1975.0. /D,H,Z,F/. Scale 1:5 000 000.- Geological Survey of Sweden, Geomagnetic publications N21, Stockholm, 1976.

1. Kcenigsfeld L.
Les anomalies de la variation seculaire du champ magnetique terrestre en Belgique de 1913 a 1957.- Institut Royal Meteorologique de Belgique, Publications serie A, N13, 1963.

2. Magnetisme terrestre. Annuaire 1981. - Institut Royal Meteorologique de Belgique, 1983.

1. Magnetic results 1983, 1984: Eskdalemuir, Hartland and Lerwick observatories.- British Geological Survey, Geomagnetic bulletin, N16, Edinburgh, 1985.

2. Magnetic Results 1985: Eskdalemuir, Hartland and Lerwick observatories.- British Geological Survey, Geomagnetic bulletin, N17, Edinburgh, 1986.

1. Hansen H.A.
The geomagnetic elements in Denmark 1928-80. /With charts, scale 1:100 000 and 1:750 000/.- Det Danske Meteorologishe Institut, Kobenhaun, 1983.

1. Mcwilliams J.
The secular variation of magnetic declination in Ireland. /For the period 1959.5-1969.0, with map of D component of the geomagnetic field and its annual change, epoch 1970.0, scale 1:1 500 000, two-colour/.- Meteorological Service, Dublin, 1969.

2. Mcwilliams J.
The secular variation of magnetic field (horizontal force, vertical force and total force) over Ireland. /For the period 1959.5-1970.5, with maps of H and Z components and total intensity of the geomagnetic field and their annual changes, epoch 1970.5, scale 1:1 500 000, two-colour/.- Meteorological Service, Dublin, 1971.

3. Commins K.G.
The secular variation of magnetic declination in Ireland (1985). /With map/.- Meteorological Service, Dublin, Ireland, 1986.

1. Mapa geomagnetico de Espana. Epoca 1975.0. Escala 1:2 500 000. /H,Z,D,I,T/.- Instituto Geografico y Catastral, Madrid, 1976.

1. Giorgi M.
Campagna magnetica sperimentale nell'Arcipelago Toscano (19 Luglio - 7 Agosto 1959). /H,Z,/.- Consiglio Nazionale Delle Ricerche, Pubblicazione N28, Roma, 1962.

2. Giorgi M.
Campagna magnetica sperimentale nelle Isole Pontine (11 Luglio - 2 Agosto 1962). /H,Z,/.- Consiglio Nazionale Delle Ricerche, Pubblicazione N29, Roma, 1962.

1. Rietman J.H.
Opmeting van het aardmagneetveld in Nederland, herleid naar 1985.- Techische rappoorten, TR-109, Koninklijk Nederlands Meteorologisch Instituut, De Bilt, 1988.

1. Le Borgne E., Le Mouel J.L., Rossignol J.C.
Reseau magnetique de repetition de la France: resultats de la campagne 1967 - variation seculaire entre 1947 et 1967.- Institut de Physique du Globe, Observations magnetiques, fascicule N5, Paris, 1971.

2. Courtillot V., Le Mouel J.L., Lepretre B.
Reseau magnetique de repetition de la France metropolitaine, resultats de la campagne 1977.- Institut de Physique du Globe, Observations magnetiques, fascicule N35, Paris, 1978.

3. Gilbert D., Le Mouel J.L.
Reseau magnetique de repetition de la France, resultats de la campagne 1982.- Institut de Physique du Globe, Observations magnetiques, fascicule N50, Paris, 1984.

1. Rikitake T.
Geomagnetism. /With charts of H,D,I components and total intensity of the geomagnetic field and their annual changes, scale 1:7 500 000/.- In: The crust and upper mantle of the Japanese area. Part 1, Geophysics (S.Miyamura, S.Uyeda, eds.), Earthquake Research Institute, The University of Tokyo, Tokyo, 1972, pp.69-96.

2. Report on DELP 1987 cruises in the Ogasawara area. Part V: measurement of three components and total intensity of the geomagnetic field in the Ogasawara Trough.- In: Bulletin of the Earthquake Research Institute, the University of Tokyo, v.64, part 2, Tokyo, 1989, pp.179-222.

3. Magnetic survey of Japan for the epoch 1970.0. /With maps of D,H,I,X,Y,Z components and total intensity of the geomagnetic field and their annual changes, scale 1:10 600 000 (lat.35 N ), two-colour/.- Data Report of Hidrographic Observations, Series of Magnetic Survey, N2, Tokyo, Japan, 1973.

4. Magnetic survey of Japan for the epoch 1975.0. /With maps of D,H,I,X,Y,Z components and total intensity of the geomagnetic field and their annual changes, scale 1:10 600 000 (lat.35 N ), two-colour/.- Data Report of Hidrographic Observations, Series of Magnetic Survey, N3, Tokyo, Japan, 1978.

5. Magnetic survey of Japan for the epoch 1980.0. /With maps of D,I,H,X,Y,Z components and total intensity of the geomagnetic field and their annual changes, scale 1:10 600 000 (lat.35 N ), two-colour/.- Data Report of Hydrographic Observations, Series of Magnetic Survey, N4, Tokyo, Japan, 1983.

6. Magnetic survey of Japan for the epoch 1985.0 /With maps of D,H,I,X,Y,Z components and total intensity of the geomagnetic field and their annual changes, scale 1:10 600 000 (lat.35 N ), two-colour/.- Data Report of Hidrographic Observations, Series of Magnetic Survey, N5, Tokyo, Japan, 1988.

1. Loomer E.I.
Annual Report for Magnetic Observatories - 1972.- Geomagnetic Service of Canada, Geomagnetic Series, N7, Ottawa, Canada, 1976.

2. Loomer E.I.
Annual Report for Magnetic Observatories - 1975.- Geomagnetic Service of Canada, Geomagnetic Series, N12, Ottawa, Canada, 1978.

3. Loomer E.I.
Annual Report for Magnetic Observatories - 1976.- Geomagnetic Service of Canada, Geomagnetic Series, N14, Ottawa, Canada, 1979.

4. Loomer E.I.
Annual Report for Magnetic Observatories - 1977.- Geomagnetic Service of Canada, Geomagnetic Series, N15, Ottawa, Canada, 1979.

5. Jansen Van Beek G., Loomer E.I.
Annual Report for Magnetic Observatories - 1979.- Geomagnetic Service of Canada, Geomagnetic Series, N22, Ottawa, Canada, 1982.

6. Jansen Van Beek G., Coles R.L.
Annual Report for Magnetic Observatories - 1981.- Geomagnetic Service of Canada, Geomagnetic Series, N24, Ottawa, Canada, 1983.

7. Jansen Van Beek G., Coles R.L., Newitt L.R.
Annual Report for Magnetic Observatories - 1982.- Geomagnetic Service of Canada, Geomagnetic Series, N26, Ottawa, Canada, 1983.

8. Coles R.L., Newitt L.R., Jansen Van Beek G.
Annual Report for Magnetic Observatories - 1983.- Geomagnetic Service of Canada, Geomagnetic Series, N28, Ottawa, Canada, 1984.

9. Jansen Van Beek G., Coles R.L., Newitt L.R.
Annual Report for Magnetic Observatories - 1984.- Geomagnetic Service of Canada, Geomagnetic Series, N30, Ottawa, Canada, 1986.

10. Magnetic Declination Chart 1980.0, Canada. Scale 1:10 000 000, Two-Colour.- Division of Geomagnetism, Earth Physics Branch, Department of Energy, Mines and Resources, Ottawa, Canada, 1980.

11. Newitt L.R., Coles R.L., Clark J.F.
Canadian Magnetic Repeat Stations 1962-1983: Instruments, Procedures and Observations.- Division of Seismology and Geomagnetism, Earth Physics Branch, Geomagnetic Series, N29, Ottawa, Canada, 1985.

12. Coles R.L., Jansen Van Beek G., Newitt L.R.
Annual Report for Magnetic Observatories and Repeat Stations - 1985.- Geological Service of Canada, Geomagnetic Series, N31, Ottawa, Canada, 1987.

13. Jansen Van Beek G., Newitt L.R.
Annual Report for Magnetic Observatories and Repeat Stations - 1986.- Geological Service of Canada, Internal Report N90-01, Ottawa, Canada, 1990.

1. Total Intensity Chart of the United States 1965.0. Lines of Equal Magnetic Total Intensity and Equal Annual Change. Scale 1:5 000 000, Two-Colour.- U.S.Department of Commerce, Coast and Geodetic Survey, Washington, 1965.

1. Carta Isogona Referida a la Epocha 1970.0. Republica Argentina (Fuerza Aerea). Escala 1:5 000 000.- Servicio Meteorologico Nacional, Buenos Aires.

1. Gama L.I.
Cyclic Fluctuations in Geomagnetic Secular Change 1915-1959.- Observatorio Nacional, Publicacoes do Servico Magnetico N7, Rio de Janeiro, 1960.

1. Magnetic Variation 1970 and Annual Rates of Change, North Pacific Ocean. Map, Epoch 1970.0, Scale 1:16 000 000 at Lat. 40 Degrees, Multicolour.- (Geomagnetism Unit, Institute of Geophysical Sciences at Herstmonceux), Hidrographic Office, Taunton, 1970.

2. Magnetic Variation 1975 and Annual Rates of Change, South Atlantic Ocean and Western Part of the Indian Ocean. Map, Epoch 1975.0, Scale 1:16 000 000 at Lat. 40 Degrees, Multicolour.- (Geomagnetism Unit, Institute of Geological Sciences U.K., Branch of Theoretical and Applied Geophysics, U.S.Geological Survey), Hidrographic Office, Taunton, 1975.

3. Magnetic Variation 1975 and Annual Rates of Change, North Atlantic Ocean. Map, Epoch 1975.0, Scale 1:16 000 000 at Lat. 40 Degrees, Multicolour.- (Geomagnetism Unit, Institute of Geological Sciences U.K., Branch of Theoretical and Applied Geophysics, U.S.Geological Survey), Hidrographic Office, Taunton, 1975.