00580nam a2200193Ia 4500008004100000020001500041082002200056100002300078245006300101250000600164260006700170300000800237650004100245650003400286653001600320653002000336653001200356700001800368170901s1996    xx            000 0 und d  a812240667X  a631.5820913bP12C  aPalaniappan, S. P. 0aCropping Systems in the TropicsbPrinciples and Management  a2  aNew DelhibNew Age International (p) Limited, Publishersc1996  a211  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgriculture  aFarming systems  aTropics  aSivaraman, K.