TY  - BOOK
ED  - International conference on world water resources. (June : Paris France)
TI  - Conference on world water resources at the begning of the 21st centuary, Water:  a looming crisis. Edited by H. Zebidi. (Unesco, Paris
T2  - Technical documents in hydrology. No. 18.; IHP-V
U1  - U295p1,N98, N9 
PY  - 1999///
CY  - Paris
PB  - Unesco France       
KW  - PHYSICAL GEOGRAPHY
N1  - International hydrological programme
ER  -