CARLIN,BENSON  <br/><br/>
ULTRASONICS 
BENSON CARLIN 
 - LONDON  1949 
 - 270 
<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>Pe180