Langley, Billy C. <br/><br/>
High-Efficiency gas furnace troubleshooting handbook /  
Billy C.Langley. 
 - New jersey :   Prentice-hall, Inc,   1991. 
 - 264 p. :   ill. ;   24 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>0133886530 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Furnaces--Maintenance and repair.<br/>Air conditioning--Maintenance and repair.--Equipment and supp;ies<br/>Gas appliances.
<br/><br/><label>Dewey Class. No.: </label>697.07  / b h