Heavens, Oliver Samuel <br/><br/>
Optical masers 
<label>/ by </label> Heavens, Oliver Samuel 
 - London  Methuen & Co. Ltd.  1964 
 - viii,103p.  ill.  19cm. 
 - Methuen's monographs on physical subjects .
<br/><br/>L 
<br/><br/><label>Dewey Class. No.: </label>535  / H