Efron, Alexander  <br/><br/>
Light / 
Alexander Efron 
 - New York :  John F. Rider,  1958 
 - vi, 127 p. :  ill. ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light
<br/><br/><label>Dewey Class. No.: </label>535  / EFL 1958