Gupta S K Global research on drainage in agriculture Gupta S K; Gupta I C - New Delhi Concept Publications India 1987 - "ix,659p" cm. ISBN: 500.00 Standard No.: 83642 Source: "387, 24/08/1987, Concepts" Thesis and Dissertations Subjects--Topical Terms: Engineering Dewey Class. No.: "X9(D2).1aN86<--N60, M7"