Water quality criteria research of the U.S. Environmental Protection Agency : proceedings of an EPA-sponsored Symposium on Marine, Estuarine and Fresh Water Quality, presented at the 26th annual meeting of the AIBS, August 1975
Corvallis, Or. : U.S. Environmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory, Technical Information Office ; Springfield, Va. : for sale by the National Technical Information Service, 1976