| Institution: | 1. Chief, Engineering Research and Development Section , Laboratory of Engineering and Physical Sciences, Division of Air Pollution, Bureau of State Services, Public Health Service , Cincinnati , Ohio , USA;2. Chief, Automotive Research Unit , Engineering Research and Development Section, Laboratory of Engineering and Physical Sciences, Division of Air Pollution, Bureau of State Services, Public Health Service , Cincinnati , Ohio , USA;3. Engineering Research and Development Section, Laboratory of Engineering and Physical Sciences, Division of Air Pollution, Bureau of State Services, Public Health Service, Supervisory Research Mechanical Engineer, U. S. Department of Health, Education, and Welfare, Robert A. Taft Sanitary Engineering Center , Cincinnati , Ohio , USA |
