International standards for drinking-water 

 - Ginebra, Sui. :  WHO,  SWI:, c1963. 
 - 206p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agua Potable.<br/>Contaminación del Agua<br/>TRATAMIENTO DEL AGUA
<br/><br/><label>Dewey Class. No.: </label>363.7394  / I655i