na INLIS000000000012129 20210520151725 210520||||||||| | ||| |||| || | 0-8213-0140-3 010-0521012129 en 63/BEN/a 63/BEN/a BENOR, Daniel Harrison, James Q. Baxter, Michael Agricultural extension the training and visit system Washington DC The World Bank 1984 x, 85 p.: ill.; 23 cm. AGRICULTURE -- EXTENSION 51/ATA/1987