PCB 73-546

		PCB 73-546 01/03/74 Order ILLINOIS CENTRAL GULF RAILROAD v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 73-546 03/06/75 Opinion and Order ILLINOIS CENTRAL GULF R.R. COMPANY v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 73-546 04/25/74 Order ILLINOIS GULF CENTRAL RAILROAD v. ENVIRONMENTAL PROTECTION AGENCY