Heavens, O.S.  <br/><br/>
Optical masers  (Book) 

 - London  Methuen  1964 
 - 103p.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lasers
<br/><br/><label>Universal Decimal Class. No.: </label>535.21 HEA  / 4406