Use of Simple, Inexpensive Microbial Water Quality Tests: Result of a Three-Continent, Eight-Country Research Projects 

 - Canada,  IDRC,  1990, 
 - 186P.  32CM. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Quality Tests
<br/><br/><label>Dewey Class. No.: </label>644.61  / USE