Switchgear handbook, vol.1-apparatus / 

 - London :  Sir Isaac Pitman & Son,  1938. 
 - ix, 190 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Power distribution<br/>Circuit breakers<br/>Electrical protection systems
<br/><br/><label>Dewey Class. No.: </label>621.3170202 SWI