00650nam a2200205Ia 4500 IN-BaIIA 20250729152512.0 211028s9999 xx 000 0 eng d IIA Library 083.550.38 IAGA-32F Mayaud, P. N. 221 Geomagnetic data 1975 indices rapid variations special intervals P. N. Mayaud Paris IUGG Publications 1976 xii,80p IAGA Bulletin; no. 32 Astronomy and Astrophysics Thesaurus Geomagnetism Magnetic Storms 222 BK ddc 115 115 0 0 ddc 0 0 BAN KOD GEN 0000-00-00 0 083.550.38/ IAGA-32F 72 2021-11-05 0000-00-00 BK