Singh, Diwa kumari. Technological change and agricultural development / Diwa Kumari Singh; forward by Madhuri Srivastava. - New Delhi : Deep and Deep Publications , 1993. - xv,179p. : tables ; 22cm . NULL ISBN: 8171004725 Rs. 200.00 Subjects--Index Terms: AGRICULTURE - ECONOMIC ASPECTS Dewey Class. No.: 338.13 / SIN/T