Protecting biological diversity in the North Woods region of the upper Great Lakes StatesPaul DeLong, Robert Fischman, Christopher Hamilton, Kathryn Kohm, Janet Wise Michalec, Richard Nagle, George Norris, Debra Prybyla, Paul Sihler, Jussi Tamminen, Mary Walsh, University of Michigan. School of Natural Resources. · First published 1987Open the Tome
Four Genera Of The World GyponinaeDwight DeLong and Paul Freytag. · First published 1964Open the Tome
