Vaid, D. K. Progress report on the systematic hydrogeological surveys ion parts of Cachar district, Assam : field season 1974-1975 / D. K. Vaid - Gauhati : C. G. W. B. Central Ground Water Board, 1977 - 13, 20, 4 p. : ill., col. maps(fold) ; 33 cm. Subjects--Topical Terms: Ground water--Cachar, AssamCachar, Assam--WatersupplyHydrogeological surveys Dewey Class. No.: 551.49 (5411)