Ross, Judy,  1942- <br/><br/>
Castor the beaver /  [book] 

 - [Toronto] :  D.C. Heath Canada,  c1980. 
 - 16 p. :  ill. (some col.), map ;  23 cm. 
 - ZooBook .
 - Zoo book. .
<br/><br/> Cover title.  Co-publisher: Metropolitan Toronto Zoo. 
<br/><br/><label>ISBN: </label>0669950033 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>810029839   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Beavers<br/>Castors
<br/><br/><label>Dewey Class. No.: </label>599.32 ROS