Practical training  : trade training I-II-III, TTC-programme: Plumber sanitary installer 

 - Lahore:  Government of Punjab,  n. d. 
 -  Various pages 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pipe fitting-Training
<br/><br/><label>Dewey Class. No.: </label>696.1  / DEP