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Protección de las aguas : aguas continentales
(MOPyT, 1993)
Water resources data for Minnesota : water year 1980
(Geological Survey, 1980)
Estudio de la contaminación del río Aconcagua
(CORFO, 1971)
GEMS Water data evaluation report 1983
(GEMS, 1983)
GEMS Water data summary
(GEMS, 1983)
Selected biological characteristics of streams in the southeastern Uinta basin, Utah and Colorado
(Geological Survey, 1981)