Clash : encounters of bears and wolves / a production of Thirteen and National Geographic Television in association with WNET.org ; produced by Bob Landis, Janet Hess ; written by Janet Hess.

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The grizzly bear and the wolf are the two dominant predators of Yellowstone Park, who contend with each other for control of the food supply.

Bibliographic Details
Uniform Title:	Rovi Media Collection. Movies. Rovi K-12 education materials.
Corporate Authors:	WNET (Television station : New York, N.Y.) National Geographic Television & Film WNET.ORG Questar, Inc
Other Authors:	Landis, Bob, 1940- Hess, Janet Abraham, F. Murray
Language:	English
Published:	Chicago : Questar, [2010], ©2010.
Series:	Rovi Media Collection. Movies. Rovi K-12 education materials.
Subjects:	Competition (Biology) > Yellowstone National Park. Predatory animals > Yellowstone National Park. Grizzly bear > Yellowstone National Park. Wolves > Yellowstone National Park. Biotic communities > Yellowstone National Park. Biotic communities. Competition (Biology) Grizzly bear. Predatory animals. Wolves. United States > Yellowstone National Park. Wildlife television programs. Nature television programs. Nonfiction television programs.
Genre:	Wildlife television programs. Nature television programs. Nonfiction television programs.
Physical Description:	1 videodisc (53 min.) : sound, color ; 4 3/4 in.
Variant Title:	Encounters of bears and wolves.
Format:	Video DVD

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