000 00307nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Douglas, James. L & Lee, Robert. R"
245 0 _aEconomics of Water resources planning
260 _bMc Graw Hill
260 _c1971
365 _b0.00
942 _cBK
999 _c151362
_d151362