Plumbing 201 
Plumbing-Heating-Cooling-Contractors-National Association Educational Foundation. 
 - 6th ed. 
 -  Cengage Learning,  2016 
 - xxvii, 582 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-1-30540164-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plumbing.
<br/><br/><label>Dewey Class. No.: </label>696.1 P734 2016