Gurvich, I. Seismic prospecting : translated from the russian / Сейсморазведка I. Gurvich, tr. Jean Agrell. - Moscow : Mir, 1972. - 463 p. Literat.: p. 457. - Index.: p. 458 - 463 Subjects--Topical Terms: Seismology Subjects--Index Terms: seismic prospecting methods observation systems