Langley, Billy C.,  1931- <br/><br/>
Air conditioning and refrigeration troubleshooting handbook / 
Billy C. Langley 
 - 2nd ed. 
 - Upper Saddle River, N.J.  Prentice Hall  2003 
 - ix, 505 p.  ill.  25 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0135787146  RM317.70 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air conditioning--Equipment and supplies--Maintenance and repair<br/>Refrigeration and refrigerating machinery--Maintenance and repair