00377nam a2200121Ia 4500008004100000082001100041100001400052245007500066260003300141300000900174600004500183650002700228140224s9999    xx            000 0 und d  a374 N5  aRay, G.L.  aTechnological gap and constraints in agricultural technology transfer.  aCalcuttabMaya Prakashc1995  a94p.  a G.L.Ray, P.Chatterjee and S.N.Banerjee.  aAgricultural extension