Johnson, R C <br/><br/>
Spectra 

 - London  Methuen & Co. Ltd.  1932 
 - 104p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural science and mathematics--Physics--PhysicsLight & infrared & ultraviolet phenomenaNatural history
<br/><br/><label>Dewey Class. No.: </label>535.84  / JOH-S