00449nam a2200157Ia 4500008004100000082001600041100001600057245003800073260004000111300000800151650004100159650003400200653001600234653002200250653001900272170901s1966    xx            000 0 und d  a631.8bR13S  aRaheja, P.C 0aSoil Productivity and Crop Growth  aBombaybAsia Publishing Housec1966  a475  aAgriculture and related technologies  aTechnology (Applied sciences)  aFertilizers  aPlant development  aSoil fertility