000
00279nam a2200133Ia 4500
008
160316s1970 xxu||||| |||| 00| 0 eng d
020
_a
100
_a
Iash
245
_a
World Water Balance
250
_a
1ST
260
_a
BELGIUM
_b
UNESCO
_c
1970
300
_a
537
700
_a
_a
999
_c
10366
_d
10366