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allen a elser
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The effect of altered streamflow on fish of the Yellowstone and Tongue rivers, Montana
Allen A. Elser · The Division
180 sayfa · 1977
Fishes / Streamflow / Effect of water levels on / Environmental aspects / Regulation
Environmental effects of Western coal combustion
Allen A. Elser · National Technical Information Service [distributor]
Sayfa sayısı yok · 1978
Coal / Combustion / Environmental aspects / Water / Pollution