Thirteenth annual convention and seminar on exploration geophysics: (Special theme: geophysical exploration for coal) / M. S. University, Baroda, Gujarat, November 12th-14th November, 1987 - Baroda: M. S. University, 1987 - 71p. Subjects--Topical Terms: Science Universal Decimal Class. No.: 550.83(082.2) / M7