000 003970000a22001570004500
260 _bOklahoma State University
041 0 _aEn.
650 1 4 _9138992
_aCALIDAD DEL AGUA
650 1 4 _9162025
_aRECURSOS HIDRICOS
593 _a13-05-1996
596 _aI
245 1 0 _aCIRCULAR E
590 _bOklahoma Cooperative Extension Service, Stillwater,
_cOKLAHOMA
_gE.U.A.
942 _cCR
999 _c130167
_d130167