PCB 80-022

		PCB 80-022 / PCB 80-193 08/20/81 Opinion and Order ILLINOIS ENVIRONMENTAL PROTECTION AGENCY v. CATERPILLAR TRACTOR COMPANY
		PCB 80-022 / PCB 80-193 10/22/81 Anderson Dissenting Opinion ILLINOIS ENVIRONMENTAL PROTECTION AGENCY v. CATERPILLAR TRACTOR COMPANY
		PCB 80-022 / PCB 80-193 10/22/81 Order ILLINOIS ENVIRONMENTAL PROTECTION AGENCY v. CATERPILLAR TRACTOR COMPANY
		PCB 80-022 / PCB 80-193 12/04/80 Order ILLINOIS ENVIRONMENTAL PROTECTION AGENCY v. CATERPILLAR TRACTOR CO., a California Corporation
		PCB 80-022 / PCB 80-193 12/04/80 Order ILLINOIS ENVIRONMENTAL PROTECTION AGENCY V. CATERPILLAR TRACTOR CO., A CALIFORNIA CORPORATION, AND CATERPILLAR TRATOR CO., A CALIFORNIA CORPORATION, V. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 80-022 / PCB 80-193 12/23/81 Order ILLINOIS ENVIRONMENTAL PROTECTION AGENCY v. CATERPILLAR TRACTOR COMPANY