Verma, Rajni K Electromagnetic sounding interpretation data over three-layer earth - New York: IFI/Plenum, 1982 Vol. 1; ix, 338p.Vol. 2; v, 546p. ISBN: 0306652048 Subjects--Topical Terms: Electric prospecting Subjects--Index Terms: Geophysics Universal Decimal Class. No.: 622.01 / M2.1