Proceeding of the 30th Industrial Waste Conference, May 6, 7, and 8, 1975, Purdue University, Lafayette, Indiana - Industrial Waste Conference 1975 : West Lafayette, Indiana); Purdue University. School of Civil Engineering; Purdue University. Division of Conference and Continuation Service; Indiana. Department of Environmental Management (Ann Arbor, Mich. : Ann Arbor Science, 1977)
The Purdue Industrial Waste Conference is under the direction of: the School of Civil Engineering, the Division of Conference and Continaution Services, in cooperation with Indiana Department of Environmental Management ... et al.
Keywords: Factory and trade waste -- Congresses; Sewage -- Purification -- Congresses