Langley, Billy C. <br/><br/>
Electromechanical and electronic controls for HVAC/R /  
Billy C. Langley.  
 - Upper Saddle River, New Jersey :  Prentice Hall,  1999. 
 - vii, 438 pages ;   24 centimeter.  
<br/><br/> Includes index.  
<br/><br/><label>ISBN: </label>0139075690 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Refrigeration and refrigerating machinery--Automatic control.<br/>Air conditioning--Control. <br/>Heating--Control. 
<br/><br/><label>Dewey Class. No.: </label>FOR 621.56 L26e 1999