000 00378nam a2200145Ia 4500
008 180612s9999||||xx |||||||||||||| ||und||
020 _a0-06-042695-0
041 _aen
082 _a333.713
100 _aJOHN M. Hartwick
245 4 _aThe Economics Natural Resource USR...............
260 _aNewyork.
_bHarper Collins Pub.
_c1986
300 _axii,530pg.
942 _cPR
999 _c52356
_d52356