000 00593nam a2200193Ia 4500
008 130910s9999 xx 000 0 und d
041 _aeng
082 _221st ed.
_a333.730973
_bDOR/W
100 _aDortignac, E.J.
245 _aWatershed resources and problems of the upper Rio Grande Basin
_c[by] E.J. Dortignac
260 _aU.S. :
_bUnited States Department of Agriculture ,
_c1956
300 _a107p. : ill.
653 _aForage
653 _aNatural resources
653 _aSediments
653 _aWater resources development
653 _aWatershed (Rio Grande basin)
942 _cEN
_2ddc
999 _c10676
_d10676