Helvarg, David,  1951- <br/><br/>
Blue frontier :  dispatches from America's ocean wilderness / 
David Helvarg. 
 - 2nd ed. 
 - San Francisco :  Sierra Club Books,  2006. 
 - xi, 319 p. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 271-300) and index. 
<br/><br/><label>ISBN: </label>1578051576 (alk. paper) 
<br/><br/><label>LCCN: </label>2005056339 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine resources conservation--United States.
<br/><br/><label>LC Class. No.: </label>GC1020  / .H45 2006 
<br/><br/><label>Dewey Class. No.: </label>333.91/64160973