000 00313 a2200121 4500
082 _a631.58
_bREP
090 _c22039
_d34596
245 _aReport of the cropping systems working group
300 _aiii,281p.
_c28cm
650 _aSPECIAL METHODS OF CULTIVATION
650 _aCULTIVATION AND HARVESTING
942 _cL
999 _c49452
_d49452