Humphreys, Richard F. <br/><br/>
First principles of atomic physics, 
by Richard F. Humphreys and Robert Beringer. 
 - New York,  Harper  [1950] 
 - ix, 390 p.  illus.  24 cm. 
<br/><br/><label>LCCN: </label>50007555  
<br/><br/><label>LC Class. No.: </label>QC21 .H985 1950  / .H985 1950 
<br/><br/><label>Dewey Class. No.: </label>530