000 00396nam a2200157Ia 4500
082 _a333.95
_bK94.NE
100 _aKrutilla, J. V.
_d ed.
245 _aNatural environments
_bstudies in theoretical and applied analysis
260 _aBaltimore
_bJohns Hopkins University Press
_c1972
300 _ax, 352p.
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a6762
999 _c6762
_d6762