Barr, Nevada. <br/><br/>
Winter study  
Nevada Barr. 
 - Berkley Premium ed. 
 - New York:  Berkley Books,  2009, c2008. 
 - xvi, 469 p. :  map ;  19 cm. 
<br/><br/> 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. 
<br/><br/><label>ISBN: </label>9780425226957  9.99 0425226956 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pigeon, Anna (Fictitious character)--Fiction.<br/>Women park rangers--Fiction.<br/>Wolves--Fiction.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Rocky Mountain National Park (Colo.)--Fiction.<br/>Isle Royale (Mich.)--Fiction.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Mystery fiction.