Langley, Billy C., 1931- <br/><br/>
Air conditioning and refrigeration troubleshooting handbook / 
Billy C. Langley 
 - Reston, Va. :  Reston Pub. Co.,  1980 
 - xi, 414 p. :  ill. ;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0835902048 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air conditioning--Equipment and supplies--Maintenance and repair<br/>Refrigeration and refrigerating machinery--Maintenance and repair