TY - BOOK ED - International Association of Geomagnetism and Aeronomy ED - Symposium on multidisciplinary studies of unusual regions of the upper mantle TI - Proceedings of the symposium on multidisciplinary studies of unusual regions of the upper mantle, Madrid - Sept. 8 and 9, 1969 T2 - International Association of Geomagnetism and Aeronomy Symposium; No. 9 PY - 1970/// CY - Paris PB - International Union of Geodesy and Geophysics KW - IuggIaga ER -