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Norman L. Christensen, Jerry F. Franklin, Jon A. Schmidt, Donald L. DeAngelis, Fred Swanson, Richard L. Hutto, David Pramer and William E. Williams
Bulletin of the Ecological Society of America
Vol. 68, No. 1 (Mar., 1987), pp. 51-60
Stable URL: http://www.jstor.org/stable/20166568
Page Count: 10