Featherstone, Robert. , <br/><br/>
Guide to the HVAC/R certification and competency tests / 
Robert Featherstone, Jesse R. Riojas. 
 - 2nd ed. 
 - vii, 340 pages :  illustrations ;  28 cm. 
<br/><br/><label>ISBN: </label>0131149490 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating --Problems, exercises, etc.<br/>Air conditioning --Problems, exercises, etc.<br/>Ventilation --Problems, exercises, etc.<br/>Mechanics (Persons) --Certification --United States.
<br/><br/><label>LC Class. No.: </label>TH7015   / .F42 2005