00469nam a2200169Ia 4500 170901s1976 xx 000 0 und d 0333901398 338.17 M85S Mukhopadhyay, Sudhin K. Sources of Variation in Agricultural Productivity Delhi Macmillan Co. of India Ltd. 1976 120 Economics Social sciences Agricultural productivity ddc BK 3252 3252 0 0 ddc 0 0 RAU RAU 2017-10-18 Oxford Book and Stn. Co., New Delhi 40.00 0 338.17 M85S 25268 2017-10-18 1981-04-25 BK 0 0 ddc 0 0 RAU RAU 2017-10-18 Macmillan Co. of India, Calcutta 53.50 0 338.17 M85S 26399 2017-10-18 1981-09-01 BK