00491nam a2200169Ia 4500008004100000020001500041082002200056100001600078245005100094250000600145260003000151300000800181650004100189650003400230653003200264653002500296170901s1982    xx            000 0 und d  a0582650259  a630.7150172bA20A  aAdams, M.E. 0aAgricultural Extension in Developing Countries  a1  aWashingtonbLongmanc1982  a108  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural extension work  aDeveloping countries