Man's influence on freshwater ecosystems and water use /
Petts, Geoffrey E.
International Union of Geodesy and Geophysics.General Assembly(21st :1995 :Boulder, Calif.)
IAHS International Commission on Surface Water.
IAHS International Commission on Water Quality.
International Association of Hydrological Sciences.International Commission on Groundwater.
Wallingford : International Association of Hydrological Sciences,
1995.
Water-supply
Freshwater ecology