00457nam a2200145Ia 4500003000900000005001700009008004100026040001600067080002600083100003300109245009800142260003500240300001500275650002100290IN-BaIIA20250703162112.0211028s9999    xx            000 0 eng d  cIIA Library  a083.550.38bIAGA-12U1  aVadedekamp, J and Siebert, M 0aGeomagnetic data 1966 indices K and C I.A.G.A Bulletin No. 1241cJ. Vadedekamp and M. Siebert  aParisbIUGG Publicationsc1969  axvi, 118p.  aGeomagnetic Data