TY - BOOK AU - Ban,A.W.van den AU - Hawkins,H.S. TI - Agricultural extension SN - 0582028833 : AV - S 544 .B2513 1988 U1 - 630/.7/15 19 PY - 1988/// CY - New York PB - Wiley KW - Agricultural extension work N1 - Based on: Inleiding tot de voorlichtingskunde. 7th ed. 1985; Includes index; Bibliography: p. 300-307 ER -