Shea, Cynthia Pollock. <br/><br/>
Protecting life on earth :    steps to save the ozone layer /  
Cyn thia Pollock Shea. 
 - Washington, D. C.  :    World Watch Institute ,    1988. 
 - 46 p. :    ill. ;    22 cm. 
 - World Watch Paper ;    no.87, December 1988. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0916468887 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Environmental protection.<br/> Ozone layer.