Shea, Cynthia Pollock <br/><br/>
Protecting life on earth :  steps to save the ozone layer / 
Cynthia Pollock Shea. 
 - Washington, DC :  Worldwatch Institute,  1988. 
 - 46 p. : ill. 
 - Worldwatch paper ; 87 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ozone layer