TY - BOOK AU - Ray,G L TI - Extension communication and management T2 - International Food Policy Research Institute SN - 818542579 U1 - 630.7 21 PY - 1999/// CY - Calcutta PB - Naya Prokash KW - Agriculture KW - Research KW - Economic aspects KW - Social aspects KW - Poverty N1 - Includes bibliographical references and index ER -