Water pollution control technology 
by Her Majesty's 
 - London  Her Majesty's  1979 
 - 165p. 
<br/><br/><label>ISBN: </label>0 11 470566 6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality management --Great Britain.<br/>Sewage disposal --Great Britain
<br/><br/><label>Dewey Class. No.: </label>V44x42 Un3c