Kaila, K. L. Twenty years research & development activity of NGRI K. L. Kaila and P. R. Reddy - Hyderabad National Geophysical Research Institute 1982 - 413p. illus; tables - Geophysical Research Bulletin . Subjects--Topical Terms: Ngri-dr.Hari Narain Universal Decimal Class. No.: 55(06) / KAI