Featherstone, Robert <br/><br/>
Guide to the HVAC/R certification and competency tests / 
Robert Featherstone, Jesse Riojas 
 - 2nd ed. 
 - Upper Saddle River, N.J. :  Prentice Hall,  c2005 
 - vii, 340 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0131149490 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating--Problems, exercises, etc.--Problems, exercises, etc.<br/>Air conditioning--Problems, exercises, etc.<br/>Ventilation--Problems,exercises, etc.<br/>Mechanics (Persons)--Certification--United States