Porges, John. <br/><br/>
Handbook of heating ventilating and air conditioning :  useful tables and data arranged in a manner convenient for ready reference /  
John Porges. 
 - 3rd ed. 
 - London :  George Newnes,  1952. 
 - Various pages. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>400  400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating -- Handbooks
<br/><br/><label>Dewey Class. No.: </label>697.09 / P825h