revision of the WHO guidelines for drinking-water quality : report of the Review Group on Disinfectants and Disinfectant By-Products, Bethesda, Maryland, U.S.A., 10-14 June 1991. 

 - [10]p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality--Standards<br/>Potable water--Standards<br/>Water microbiology<br/>Guidelines