The effects of artificial aeration on lake ecology : project no. 16010 EXE, December 1971
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書誌事項
The effects of artificial aeration on lake ecology : project no. 16010 EXE, December 1971
（Water pollution control research series）
Environmental Protection Agency ; for sale by the Supt. of Docs., U.S. Govt. Print. Off, [1971]
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注記
"16100 EXE 12/71" -- cover