1. Business Week: 77 (13 5 1972).
2. CONGRESSIONAL RECORD: S17425 (2 11 1971).
3. Economic Analysis and the Efficiency of Government, pt. 6, Economic Incentives to Pollution Control: 1191 (1971).
4. Economic Analysis and the Efficiency in Government, pt. 6, Economic Incentives to Pollu(tion Control: 1254 (1971).
5. Environmental Quality 1971 1971