- ISBN: 9781436203715 (electronic bk. : Adobe Digital Editions)
- ISBN: 1436203716 (electronic bk. : Adobe Digital Editions)
- ISBN: 9781436203746 (electronic bk. : Mobipocket Reader)
- ISBN: 1436203740 (electronic bk. : Mobipocket Reader)
- Physical Description: 1 online resource (xiii, 370 pages) : map
- Publisher: New York : G.P. Putnam's Sons, 
- Copyright: ©2008
|General Note:|| Description based on print version record.
|Summary, etc.:|| Visiting an isolated Lake Superior isle to study wolf behavior, ranger Anna Pigeon joins a scientific group that subsequently discovers unusual DNA evidence suggesting that a giant and dangerous wolf hybrid has been introduced by an unknown source.
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|Subject:||Pigeon, Anna (Fictitious character) > Fiction.
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