Bergman, Charles. <br/><br/>
Wild echoes :  encounters with the most endangered animals in Nort h America / 
by Charles Bergman. 
 - New York :  McGraw-Hill,  c1990. 
 - xii, 322 p., [8] p. of plates :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>007004922X 
<br/><br/><label>LCCN: </label>89-012271 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Endangered species--North America.
<br/><br/><label>Dewey Class. No.: </label>591.52/9