1. DER [Division of Environmental Radiation] (series). 69-1. Evaluation of radon 222 near uranium tailings piles, final report of joint project of Public Health Service and Atomic Energy Commission, [with list of references]. Bookmark Corporate/Agency Authors: Public Health Service and Health, Education and Welfare Dept. Publisher: Public Health Service Date: Mar. 1969 SuDoc number: FS 2.314/3:69-1