Heavens, O. S, <br/><br/>
Optical masers  
O. S. Heavens. 
 - London :  Methuen,  1964. 
 - 103 pages :   illustrations ;   18 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lasers.