00989nam a22002417a 4500 INP 20260622100522.0 260505b1976 ua ja||f |||| 000 0 eng d EG-INP EG-INP 21 338.9 O.A Abdel-Razek, A. H. On Optimum Sample Size for Estimating Dura Crop Yield Rate in Sudan A. H. Abdel-Razek Cairo Institute of National Planning 1976 10P Paper 26cm مذكرة خارجية 1164 The Sudan is predominantly an agricultural country, agriculture is the main sector of its economy and its principal source of foreign exchange the government is building up most of its social and economical development program and basing its external trade agreements on agriculture. Qmark Optimum Sample Size 2387 Qmark Sudan Qmark Dura Crop 848 Emad copycat 22503 22503 0 INP INP EN 0 INP INP EN 0 INP INP EN 0 INP INP EN