Malawi bureau of Standards <br/><br/>
Standard Specification for Unplasticized Polyvinyl Chloride (UPVC) type 1 pressure pipes and fittings ( for cold water services) 
by Malawi Bureau of Standarrds 
 - Blantyre  Malawi Standards Board  c1976 
 - 23p.  ill; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>polyvinyl chloride
<br/><br/><label>Dewey Class. No.: </label>696.2