Water treatment technology / 
[prepared by the Department of the Environment and the Central Office of Information]. 
 - London :  H.M.S.O.,  1979. 
 - 144p. :  ill. ;  25cm. 
<br/><br/><label>ISBN: </label>9780114705671 (pbk) :  £3.25 0114705674 (pbk.) :  Đ3.25 
<br/><br/><label>LCCN: </label>81464979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification
<br/><br/><label>LC Class. No.: </label>TD430 
<br/><br/><label>Dewey Class. No.: </label>628.162 WAT