PCB 77-264

		PCB 77-264 11/10/77 Order INTERPACE CORPORATION, a Delaware corporation v. ENVIRONMENTAL PROTECTION AGENCY OF ILLINOIS
		PCB 77-264 11/23/77 Order INTERPACE CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 77-264 12/20/77 Opinion and Order INTERPACE CORPORATION, a Delaware Corporation v. ENVIRONMENTAL PROTECTION AGENCY