Phosphate removal in biological treatment process proceedings of a seminar held in Pretoria, Republic of South Africa, 5-6 April 1982, one of four-post-conference held concurrently in Pretoria after the 11th IAWPRC Biennial Conference, Cape Town, 29 Marc / 
H.N.S. Wiechers. 
 - Oxford :  Pergamon Press,  1983. 
 - 382 pages ;  25 cm. 
 - Water Science and Technology  v.15, no.3/4 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification.<br/>Phosphates.