Townsend, A.L. <br/><br/>
Plumbing 2 / 
A.L. Townsend. 
 - Third Edition 
 - London :  Hutchinson Educational ltd,  1970. 
 - 410 p. :  fig., tables. 
<br/><br/><label>ISBN: </label>0-09-098050-6 0-09-098-51-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Engineering