Wilson, J. (1982). Proceedings of the national water conference on water quality and the clean water act. Academy of Natural Sciences of Philadelphia.
Chicago-referens (17:e uppl.)Wilson, James. Proceedings of the National Water Conference on Water Quality and the Clean Water Act. Pennsylvania: Academy of Natural Sciences of Philadelphia, 1982.
MLA-referens (9:e uppl.)Wilson, James. Proceedings of the National Water Conference on Water Quality and the Clean Water Act. Academy of Natural Sciences of Philadelphia, 1982.
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