000 00372cam a22001337a 4500
008 180718b1957 xxu||||| |||| 00| 0 eng d
082 _aYx73 G978
100 _aGustafson, A.F.
245 _aConservation in the United States
_cby A.F. Gustafson... [et.al]
250 _a3rd ed.
260 _aIthaca
_bComstock
_c1957
300 _a534p.
650 _aNatural Resources - USA
999 _c367262
_d367262