000 003530000a22001690004500
650 1 4 _9134743
_aAGRICULTURA
650 1 4 _9151984
_aINVESTIGACION
593 _a10-06-1999
596 _aI
245 1 0 _aCIRCULAR
260 _bUSDA - Office of Experiment Station
310 _aIrr.
362 1 _a1889-
590 _gUSA
942 _cCR
999 _c130148
_d130148