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 - Wiechers, H. N. S. (Oxford : Pergamon Press, 1983)
Keywords: Sewage -- Purification; Phosphates