Gay, Kathlyn. <br/><br/>
Ozone / 
Kathlyn Gay. 
 - 1st  ed. 
 - New York :  Franklin Watts,  1989. 
 - 128  p. 
<br/><br/><label>ISBN: </label>0531107779 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atmospheric ozone--Environmental aspects.<br/>Ozone layer.