00446nam a2200157Ia 4500008004100000082001800041100001800059245003200077250000600109260003600115300000800151650004100159650003400200653003200234653002200266170901s1979    xx            000 0 und d  a630.717bD11E  aDahama, O. P. 0aExtension And Rural Welfare  a7  aAgrabRam Prasad And Sonsc1979  a716  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural extension work  aRural development