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

 - New York :   Wiley,   1947. 
 - 188 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BOMBAS DE CALOR<br/>REFRIGERACION<br/>SISTEMAS FRIGORIFICOS
<br/><br/><label>Universal Decimal Class. No.: </label>621.577