Krishnaswamy, V. S. Geological Survey of India, special publication no. 4 proceedingss of symposium on drilling technology and engineering aids to geological exploration V. S. Krishnaswamy - Calcutta Indian Geological Survey 1980 - xi+637p. col plates, figs, maps Subjects--Topical Terms: Borehole GeophysicsCretaceous BasinDrilling TechnologyInventory ControlDamsite InvestigationDeviation ProblemsFormation Pressure Universal Decimal Class. No.: 550.822 / GSI