Shea, Cynthia Pollock. <br/><br/>
Protecting life on earth :  steps to save the ozone layer / 
Cynthia Pollock Shea. 
 - Washington, D.C., USA. :  Worldwatch Institute,  c1988. 
 - 46 p. :  ill. ;  22 cm. 
 - Worldwatch paper ;  87 .
 - Worldwatch paper .
<br/><br/> "December 1988." 
<br/><br/>Bibliography: p. 38-46. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atmosfera.
<br/><br/><label>Dewey Class. No.: </label>301