00266nam a22001097a 4500003000400000008004100004082001800045100001700063245004800080260002000128300000800148OSt240803b        |||||||| |||| 00| 0 eng d  a631.371bC34E  aChimappa, B.  aEconomics of Energy Use in Cropping Systems  aNPH Delhic2012  a119