References
- U.S. Bureau of Census . 1983 and 1988 . County and City Data Book , Washington, D.C. : U.S. Government Printing Office .
- Cohen , B. L. and Shah , R. 1991 . Mean radon levels in U.S. homes by states and counties . Health Phys. , 60 : 243
- Department of Health and Rehabilitative Services . 1989 . State of Florida. Florida Statewide Radiation Study , Geomet. Rep. No. IE‐1808
- New Jersey Department of Environmental Protection . 1989 . Statewide Scientific Study of Radon, Task 3 Final Report Trenton, NJ cf. Table 3.6
- Fjeld , R. A. , Jones , M. D. and Bivens , N. 1990 . Screening survey of indoor 222Rn in South Carolina . Health Phys. , 59 : 217
- New Hampshire Division of Public Health Services, New Hampshire Radon Survey, DPHS Rep. #89–015, 1989, and 1987–1990 Addendum, 1991
- Iowa Radon Project . 1989 . Results of radon tests in Iowa homes , Ames : Iowa State University Extension .
- Idaho Department of Health and Welfare . 1988 . Screening survey of radon in Idaho homes
- Kumar , A. , Heydenger , A. G. and Harrell , J. A. 1990 . Development of an indoor radon information system for Ohio , University of Toledo Report to Ohio Air Quality Development Authority .
- EPA Radon Division . 1989 . Radon in U.S. homes: a summary of the available literature on annual and screening radon concentrations, seasonal variations, and differences between floors Washington, D.C.
- EPA Radon Division . April 1992 . “ National Residential Radon Survey ” . In Statistical analysis April , Washington, D.C.