Johnson, R. C. <br/><br/>
Atomic spectra / 
by R.C. Johnson. 
 - 2nd ed. 
 - London :  Methuen,  1950 [reprinted 1957] 
 - viii, 120 p. :  ill. ;  17 cm. 
 - Methuen's monographs on physical subjects .
<br/><br/>Includes bibliography and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atomic spectra.
<br/><br/><label>Dewey Class. No.: </label>539.14   / JOA 1957