00415nam a2200145Ia 4500003000900000005001700009008004100026040001600067080002600083100001400109245007600123260003500199300001400234650002100248IN-BaIIA20250729151422.0211028s9999    xx            000 0 eng d  cIIA Library  a083.550.38bIAGA-12T2  aRomana, A 0aGeomagnetic data 1965 rapid variations (IAGA Bulletin No.12)cA. Romana  aParisbIUGG Publicationsc1969  avii, 88p.  aGeomagnetic Data