Davies, W.G. <br/><br/>
Light 

 - London  Blackie & son.  1961 
 - iv, 236 p. 
<br/><br/><label>ISBN: </label>245405 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light
<br/><br/><label>Dewey Class. No.: </label>535  / DAV