Richtmyer, F. K Kennard, E. H Cooper, John N. <br/><br/>
Introduction to Modern Physics 

 - New York  Tata McGraw-hill  1969 
 - p.767 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics<br/>Atomic Spectra
<br/><br/><label>Dewey Class. No.: </label>539 R5374I