Proceedings...Session.Conference.Pollution of Lake Michigan and its tributary basin, Illinois, Indiana, Michigan, and Wisconsin
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مواد مشابهة: Proceedings...Session.Conference.Pollution of Lake Michigan and its tributary basin, Illinois, Indiana, Michigan, and Wisconsin
- SESSION of the conference in the matter of pollution of Lake Michigan and its tributary basin
- Session of the conference in the matter of pollution of Lake Michigan and its tributary basin Held in Chicago, Ill., Febr. 25, 1969
- Proceedings. Conference in the matter of pollution of navigable waters of the Detroit river and lake Erie and their tributaries in the State of Michigan.
- Proceedings, Conference in the matter of pollution of navigable waters of the Detroit river and lake Erie and their tributaries in the State of Michigan. 2. sess., Vol. 1
- Lake Michigan.
- Proceedings. Conference in the matter of pollution of the interstate waters of the Mahoning River and its Tributaries.