Document jgJ500a7g6GZdbDrxjB3O1jM9

41. J. W. Frey and M. Corn, "Physical and Chemical Characteristics of Particulates in Diesel Exhaust," Journal of the American Industrial Hygiene Association 28, 468 (19^7). 42. S. K. Sood and R. Karuhn, U.S. Government Report PB 198033, "Development of Particulate Emissions Control Technia.ues for Spark Emission Engines," Final Report from IIT Research Institute to the Air Pollution Control Office, EPA, February 1971. 43* A. E. Felt and R. V. Kerley, "Engines and Effects of Lead-Free Gasoline," SAE Paper No. 710367, presented at Mississippi Valley Section meeting, October 1970. 44. M. C. Battigelli, T. F. Hatch, R. J. Mannella, and F. Hengstenberg, "Dose Response Relations from Inhalation of Diesel Exhaust," Terminal Report, U.S. Public Health Service, Grant No. 0H-00191-02, University of Pittsburgh, 1967.' 45. G. M. Badger, "Mode of Formation of Carcinogens in Human Environment," National Cancer Institute Monograph 9, 1 (1962). 46. L. R. Reckner, W. E. Scott, and W. F. Biller,"The Composition and Odor of Diesel Exhaust," Proceedings of the American Petroleum Institue,, Section III, 4, 133 (1965). 47. Carl W. Melton, "Physical and Chemical Characterization of Particulates in Auto Exhaust," paper presented at the 1971 Automotive Air Pollution Research Symposium sponsored by The Coordinating Research Council, Inc., Air Pollution Research Advisory Committee, Chicago, May 1971. 17 8000 0631 PRODUCED RV FAt>n