1. U.S. Dept. of Health, Education, and Welfare, Publ. Health Serv. (1966) No. 999-AP-27.
2. U.S. Dept. of Health, Education, and Welfare, Publ. Health Serv. (1965) No. 999-AP-13.
3. Air Pollution;Haagen-Smit,1968
4. Oxidants: Air Quality Criteria Based on Health Effects