000
00323nam a2200109Ia 45e0
008
181001s1977 xx 000 0 und d
100
_a
Heimos
245
0
_a
Hierarchical analysis of water resources
260
_b
McGraw Hill com.
_c
1977
300
_a
478
942
_2
ddc
_c
BK
999
_c
3473
_d
3473