Allen, John Robins,  1869-1920 <br/><br/>
Heating and airconditioning / 
by  John R. Allen, James Herbert Walker and John William James 
 - 6th ed. 
 - New York :  McGraw-Hill Book,  1946 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering<br/>Electric industries
<br/><br/><label>Dewey Class. No.: </label>131