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  1. By: Peterson, J. T. - Larimore, R. Weldon (Richard Weldon), - Commonwealth Edison Company. - Illinois. Aquatic Biology Section. - Illinois. Natural History Survey Division. Aquatic Biology Section.
    Publication info: [Champaign], Ill, Illinois Natural History Survey, Jan. 1989
    Holding Institution: University Library, University of Illinois Urbana Champaign