00506nam a2200157Ia 4500003000900000008004100009040001600050080002500066245009700091260003500188300001500223490002800238650004100266650001700307700002400324IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a083.550.38bIAGA-32B 0aGeomagnetic data 1971bindices, rapid variations, special intervalscedited by Van D. Sabben  aParisbIUGG Publicationsc1972  axii, 105p.  aIAGA Bulletin; no. 32 b  aAstronomy and astrophysics thesaurus  aGeomagnetism  aVan Sabben, D., ed.