Guidelines for canadian drinking water quality 

 - 5 ed. 
 - Ottawa :  The Subcommittee,  1993 
 - 24 p. 
<br/><br/><label>LCCN: </label>7773 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agua potable--Calidad.<br/>Agua potable--Normas de calidad.