PCB 73-236

		PCB 73-236 06/13/74 Order VIKING INVESTMENT CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 73-236 08/23/73 Order VIKING INVESTMENT CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 73-236 08/30/73 Order VIKING INVESTMENT CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 73-236 09/06/73 Opinion and Order VIKING INVESTMENT CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY