1. National Air Pollution Control Administration publication AP (series). 33. Sources of polynuclear hydrocarbons in atmosphere [with list of references; by] R. P. Hangebrauck, D. J. von Lehmden, [and] J. E. Meeker. Bookmark Corporate/Agency Authors: National Air Pollution Control Administration and Health, Education and Welfare Dept. Publisher: National Air Pollution Control Administration Date: 1967 SuDoc number: HE 20.1309:(nos.)