00306nam a2200109Ia 4500008004100000082001900041245005200060260003900112300001300151600001600164650001600180130903s9999    xx            000 0 und d  a63:301.243  L3  aKey Communications of Agricultural Innovations.  aAgrabSatish Book Enterprisec1973  axv,204p.  aSingh, Y.P.  aAgriculture