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sewage disposal in rivers lakes etc environmental aspects

Lake Chivero : a polluted lake

edited by N.A.G. Moyo
Bok Engelsk 1997 · Vis mer

Pollutant effects in freshwater : applied limnology

Welch, E. B
Bok Engelsk 2004 · Vis mer

Ecological effects of wastewater : applied limnology and pollutant effects

Welch, E. B
Bok Engelsk 1992 · Vis mer

Phosphorus management strategies for lakes : proceedings of the 1979 conference sponsored by the New York State College of Agriculture and Life Sciences, a statutory college of the State University at Cornell University, [and] the International Joint Commission (U.S. and Canada)

edited by Raymond C. Loehr, Colleen S. Ma...
Bok Engelsk 1980 · Vis mer

Hearings on the reauthorization of the Higher Education Act of 1965 : Title IX, trio and state student incentive grants, and campus-based programs : hearings before the Subcommittee on Postsecondary Education of the Committee on Education and Labor, House of Representatives, One Hundred Second Congress, first session, hearings held in Washington, DC, June 13, 18, and 26, 1991.

United States.
Bok Engelsk · Vis mer

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