00894nam0-22003011i-450-99000385535040332120080115124506.0522-83841-3000385535FED01000385535(Aleph)000385535FED0100038553520030910d--------km-y0itay50------baitaITAgricultural ExtensionFarm Extension Services in Australia, Britain and the United States of AmericaDonald B. Williams.LondonNew YorkMelbourne University Press1968.xi, 218 p.22 cmPolitica agrariaH/1.14Williams,Donald B.146145ITUNINARICAUNIMARCBK990003855350403321H/1.14 WIL4574/ISESSESAgricultural Extension514832UNINA