- Status of the timber wolf in Wisconsin: Performance report, 1 July 1992 to 30 June 1993 (Wisconsin endangered resources report) by Adrian P Wydeven,  1993
 - Recovery of the timber wolf, 1988-89 (Wisconsin endangered resources report) by Richard P Thiel,  1989
 - THE YELLOWSTONE WOLVES WIN ONE.(appeals court overturns lower court, allowing wolves to remain)(Brief Article): An article from: E by Damon Franz,  2000-05-01
 - The Gray Wolf (Endangered and Threatened Animals) by Chris Reiter,  2003-01
 - Recent changes in distribution and status of wild red wolves (Canis rufus) (Endangered species report) by Howard McCarley,  1979
 - Gray Wolves (True Books: Animals) by Patricia A. Fink Martin,  2003-03
 - Wolves (Our Wild World) by Laura Evert,  2000-09
 - The Wolf (Endangered Animals & Habitats) by Hayley R. Mitchell,  1998-04
 - The Wolves by Brian J. Heinz, Bernie Fuchs,  1996-10-01
 - Captivity, inbreeding, cross-lineage matings, and body size in Mexican wolves. (Canid Conservation).: An article from: Endangered Species Update by Richard Fredrickson, Philip Hedrick,  2001-07-01
 - Problems and recommendations for the conservation of the maned wolf in Argentina: results from the First Workshop of Chrysocyon brachyurus in Argentina ... An article from: Endangered Species Update by Lucia Soler, Jean Marie Carenton, et all  2005-01-01
 - Draft Wisconsin timber wolf recovery plan environmental analysis ([Wisconsin endangered resources report) by Richard P Thiel,  1988
 - Status of the timber wolf, 1990-1991 (Wisconsin endangered resources report) by Adrian P Wydeven,  1991
 - Status of the timber wolf in Wisconsin: Performance report (Wisconsin endangered resources report) by Richard P Thiel,  1984
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