00493nam a2200157Ia 4500008004100000020001500041082002200056100001600078245005100094260005000145300000800195650004100203650003400244653003200278653002500310170901s1982    xx            000 0 und d  a0582025427  a630.7150172bA20A  aAdams, M. E 0aAgricultural Extension in Developing Countries  aUKbELBS, English Language Book Societyc1982  a107  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural extension work  aDeveloping countries