000 00356nam a2200145Ia 4500
008 140317s9999 xx 000 0 und d
082 _a333.7
100 _aSmith,G.H.
245 _aConservation of natural resources.4th ed.(Two Copies)
260 _aN.Y.
_bJohn Wiley
_c1971
300 _a685
650 _aEconomics
653 _aEconomics
942 _2ddc
_cBK
999 _c13
_d13