Pipefitting:Level Four:Annotated Instructor's Guide 

 - 3rd ed 
 -   Pearson,  Nccer(National Center For Construction Education And Research)  ©2007 
<br/><br/><label>ISBN: </label>9780136144304  00 
<br/><br/><label>Dewey Class. No.: </label>696.2/PIP