NA <br/><br/>
Rural  water supply operation and maintenance manual  Vol- III / 

 -  Philippiness,  National water Resources council,  c 1980. 
 - Xvi,96p. '  NA.  24 cm. 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>LC Class. No.: </label>0 
<br/><br/><label>Dewey Class. No.: </label>628.72096883