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040 _aMX-TxCIM
090 _aREP-6618
100 1 _aCollins, G.N.
245 0 0 _aA comparison of maize-breeding methods
260 _aWashington, DC (USA) :
_bU.S. Department of Agriculture,
_c1926
300 _a22 pages
340 _aPrinted
490 _aDepartment Bulletin ;
_vNo. 1396
546 _aEnglish
595 _aRPC
942 _cBK
999 _c53983
_d53983