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Operation grizzly bear

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Cover for Operation grizzly bear
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Marian CalabroFirst published 19891 editions

Describes the thirteen-year-study of grizzly bears done by John and Frank Craighead in Yellowstone National Park, in which their use of the radio-tracking collar and other innovations added to the scope of human knowledge about the grizzly.

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First publish date 19891 credited authorSearch language english

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  • Marian Calabro

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