00413nam a2200157Ia 4500008004100000020001800041082001400059100001500073245002700088250000600115260003800121300000800159650004100167650003400208653001300242170901s1999    xx            000 0 und d  a9788127239701  a631bR29P  aReddy, S.R 0aPrinciples of Agronomy  a1  aLudhinabKalyani Publishersc1999  a611  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgronomy