Mayhew, J. D. <br/><br/>
The Whalebook :  a conservation manual, source book, teaching tool / 
J. D. Mayhew. 
 - United States of America :  Center for Action on Endangered Species, Inc. and the Center for Environmental Education, Inc.,  1978. 
 - vii; 64 p. ;  il. ;  23 cm. 
<br/><br/>Bibliografía: p. 58-64. 
<br/><br/><br/>Inglés 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Whale<br/>Ballena
<br/><br/><label>Dewey Class. No.: </label>599.5