HVAC Licensing Study Guide 
by Rex Miller, Mark R. Miller. 
 - 3rd ed. 
 - New York, N.Y.  McGraw-Hill Education,  2018 
<br/><br/><label>ISBN: </label>9781260116007 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heating and ventilation industry Refrigeration and refrigerating machinery Air conditioning Heating Ventilation