Intl. Hydrological Programme
Hydrology and water resources development in a vulnerable environment - Paris UNESCO 1996 - 54 p.
Water resources development:Hydrology
551.588:556.182 I5H
Hydrology and water resources development in a vulnerable environment - Paris UNESCO 1996 - 54 p.
Water resources development:Hydrology
551.588:556.182 I5H