ELEMENTARY PHYSICS/ 
NELKON M . 
 - 2ND EDITION 
 - LONDON. :  HEINEMANN EDUCATIONAL,  1971. 
 - 180  ill 
<br/><br/><label>ISBN: </label>0435676547 
<br/><br/><label>LC Class. No.: </label>QC 23  / .A23 1971