00459nam a2200157Ia 4500008004100000020001500041082001600056100001700072245004400089260004900133300000800182650004100190650003400231653002000265700001600285170901s1971    xx            000 0 und d  a0435629905  a631.5bW19P  aWareing, P.F 0aPotential Crop ProductionbA Case Study  aNew DelhibHeinemann Educational Booksc1971  a387  aAgriculture and related technologies  aTechnology (Applied sciences)  aCrop production  aCooper, J.P