Water supply and sewerage 

 - Washington  World Bank USA       1971 
 - 15p.  cm. 
 - Its sector working paper series .
<br/><br/><label>Standard No.: </label>84557 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>"X9(D85-864).1(X).N7, L1/UN"