A report on water quality surveillance during 1970 : on the Chicago and Calumet River systems in the Metropolitan Sanitary District of Greater Chicago /
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| Format: | Book |
| Language: | English |
| Published: |
Springfield, Ill. :
[Environmental Protection Agency, State of Illinois],
[1971]
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| Subjects: |
| Item Description: | "July 1971." |
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| Physical Description: | 53 pages : illustrations ; 28 cm. |