Brownell, M. Barbara. <br/><br/>
Busy beavers / 
by M. Barbara Brownell. 
 - [Washington, D.C.] :  National Geographic Society,  c1988. 
 - 32, [2] p. :  col. ill. ;  28 cm. 
 - Books for young explorers .
<br/><br/>Bibliography: p. [34]. 
<br/><br/> Photographs and text introduce the physical characteristics and habits of the beaver. 
<br/><br/><label>ISBN: </label>0870447408 0870447459 (lib. bdg.) 
<br/><br/><label>LCCN: </label>88019703  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Beavers--Juvenile literature.<br/>Beavers.
<br/><br/><label>Dewey Class. No.: </label>599 BRO 1988