"Hall, William"  <br/><br/>
Patterns teachers guide 3 energy  / 
"Hall, William" , "Mowel, Brian" , "Bausor, John" 
 - الإسكندرية  LONGMAN & PENGUIN BOOKS  1932 
 - 255 P. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Energy<br/>Electricity
<br/><br/><label>Dewey Class. No.: </label>Ref/621.31/BP