Sangwan, S.S.. Production and marketing of potato in India : a case study of Uttar Pradesh / S.S. Sangwan. - New Delhi : Mittal Publications , 1991. - xix,258p. : Ills. ; 23cm . NULL ISBN: 8170992435 Rs.170.00 Subjects--Index Terms: FARM PRODUCE-MARKETING-INDIA Dewey Class. No.: 380.141521 / SAN/P