TY - BOOK AU - Evenson, Robert E. TI - Research and extension in agricultural development SN - 1558151834 PY - 1991/// CY - California : PB - International Center for Economic Growth, KW - Agriculture--Research KW - Agricultural development KW - Agricultural extension work--Economic aspects KW - Agricultural productivity--Research and extension in agricultural development KW - Economic aspects KW - ICEG occasional papers ER -