GIBSON ,CHARLES R. <br/><br/>
ELECTRICITY OF TODAY  
CHARLES R. GIBSON  
 - LONDON   SEELEY SERVICE AND CO LIMITED   1915 
 - 346PAGES 
<br/><br/> PE mean Physics, Electricity and Magnetism Page 450-456 in A to Z Register (Acc. No. Pe1-Pe205) 
<br/><br/><label>Dewey Class. No.: </label>PE2