PSSC physics 
Uri Haber-Schaim ... et al. 
 - 3rd ed. 
 - Lexington, Mass. :  D. C. Heath and Company,  1971 
 - 674 p. :  ill. (part col.) ;  27 cm. 
<br/><br/> At head of title: PSSC. 
<br/><br/><label>ISBN: </label>0669188956 
<br/><br/><label>LCCN: </label>70-129102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics