TY  - BOOK
TI  - World water balance and water resources of the earth
SN  - 9231014978
U1  - 333.91 
PY  - 1978///
CY  - Paris
PB  - Unesco
KW  - Water balance (Hydrology)
KW  - BALANCE HIDROLOGICO.
N1  - Includes bibliographical references
ER  -