Cahn, Robert <br/><br/>
Footprints on the planet :  a search for an environmental ethic / 
Robert Cahn foreword by Jacques Cousteau 
 - New York  :  Universe Books,  1978 
 - 277 p.  ;  22 cm. 
<br/><br/>Bibliography : p.271-272 and index 
<br/><br/><label>ISBN: </label>0876633246 
<br/><br/><label>LCCN: </label>78-56363 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection