000 00312nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a330.115
_bAYR
100 _aAyres, Robert U
245 0 _aResources environment and economics
260 _aNew York
_bJohn Wiley
_c1978
650 _aEconometrics
942 _cBK
999 _c28375
_d28375