Blumenthal, I. S. <br/><br/>
Positive pollution / 
I.S. Blumenthal 
 - 31 pages ;  28 cm. 
 - The Rand paper series;  P-4613 .
 - The Rand paper series;  P-4613 .
<br/><br/>Includes bibliographical references: pages 29-31 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine pollution.<br/>Coasts--Recreational use.