TY - BOOK AU - Alldredge, Leroy R., ed. TI - Transactions of the general scientific assembly, Madrid, Spain, 1969 T2 - International Association of Geomagnetism and Aeronomy Bulletin; No. 27 PY - 1969/// CY - Paris PB - International Union of Geodesy and Geophysics KW - Iaga Bulletin No.27Iaga BulletinIugg ER -