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041 0 _aEn
650 1 4 _9134743
_aAGRICULTURA
593 _a06-04-1999
260 _bColorado Agricultural Experiment
310 _aIrr.
362 1 _a1887-
596 _aI
245 1 0 _aBULLETIN
590 _gUSA
942 _cCR
999 _c129819
_d129819