000
00307nam a2200121Ia 4500
008
180721s9999 xx 000 0 und d
100
_a
"Douglas, James. L & Lee, Robert. R"
245
0
_a
Economics of Water resources planning
260
_b
Mc Graw Hill
260
_c
1971
365
_b
0.00
942
_c
BK
999
_c
151362
_d
151362