Sporn, Philip. <br/><br/>
Heat pumps 

 - 1st 
 - New York  Wiley  1947 
 - vii,188p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heat Pumps
<br/><br/><label>Dewey Class. No.: </label>621.5  / S7643