New York. Department of Health <br/><br/>
Manual de tratamiento de aguas 

 - México :  Limusa-Wiley,  1964 
 - 205 p. :  il. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGUA--PURIFICACION
<br/><br/><label>Dewey Class. No.: </label>628.16  / N532