TY - BOOK AU - Albrecht, Hartmut AU - Bergmann, Herbert AU - Diederich, Georg AU - Grober, Eberhard TI - Agricultural extension SN - 3880853649 CY - New Delhi KW - Agricultural extension KW - Agriculture KW - Extension methods KW - Rural development N1 - Contents : V1. Basic concepts and methods V2.Examples and background material ER -