00300nam a2200109Ia 4500082002800000100003200028245006100060260004900121300001000170500000500180700000500185  a338.163309545bSi617.MF  aSingh, I. J. and Day, R. H.  aMannual of field crop technology for the Punjab, Indiab  aMadisonbUniversity of Wisconsin Presscn.d.  a113p.  a  a