TY - BOOK AU - Wright,David Ellis ED - Construction Industry Research and Information Association Project Steering Group TI - Cost-effective sewage treatment: the creation of an optimising model T2 - CIRIA report PY - 1973///-75 CY - London PB - Construction Industry Research and Information Association KW - Sewage disposal plants KW - Design and construction KW - Mathematical models N1 - Vol. 1 : General introduction Vol. 2 : Performance and cost calculations ER -