Συλλογικό Έργο:	Pittsburgh Sanitary Engineering Conference Pittsburg), University of Pittsburgh. Institute for Urban Policy and Administration. Graduate School of Public and International Affairs
Μορφή:	Βιβλίο
Γλώσσα:	English
Έκδοση:	Pittsburgh : Institute for Urban Policy and Aministration, University of Pittsburgh, [197?]
Θέματα:	Factory and trade waste Watet > Pollution