Water pollution control engineering / 
prepared by the Central Office of Information for the Ministry of Technology and the Ministry of Housing and Local Government. 
 - London :  H.M.S.O.,  1969. 
 - 137 p. ;  ill. 
<br/><br/><label>ISBN: </label>0114702209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewerage and sewage disposal.<br/>Water--Pollution