00465nam a2200169Ia 4500008004100000020001500041082001800056100001400074245004300088250000600131260003300137300000800170650004100178650003400219653001800253653002400271170901s1991    xx            000 0 und d  a8185421560  a630.717bR22E  aRay, G.L. 0aExtension Communication and Management  a1  aCalcuttabNaya Prokashc1991  a325  aAgriculture and related technologies  aTechnology (Applied sciences)  aCommunication  aExtension Education