Houstoun, R. A.  1883- <br/><br/>
A treatise on light / 
by R. A. Houstoun 
 - 7th ed. 
 - London :  Longman,  1949 
 - xi, 528 p. ;  21 cm. 
<br/><br/> Includes index  Library has 2 cops. 
<br/><br/><label>ISBN: </label> usd 3.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light