Geomagnetic data 1966 indices K and C I.A.G.A Bulletin No. 1241
Vadedekamp, J and Siebert, M
Geomagnetic data 1966 indices K and C I.A.G.A Bulletin No. 1241 J. Vadedekamp and M. Siebert - Paris IUGG Publications 1969 - xvi, 118p.
Geomagnetic Data
083.550.38 / IAGA-12U1
Geomagnetic data 1966 indices K and C I.A.G.A Bulletin No. 1241 J. Vadedekamp and M. Siebert - Paris IUGG Publications 1969 - xvi, 118p.
Geomagnetic Data
083.550.38 / IAGA-12U1