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Figure 6
Map of the United States showing the distribution of radon in ground water supplies in the U.S.A. by County. (19) XXX (From Cothern and Smith, p.118)
Figure 5. Map of the United States showing areas with potentially high radon levels in soil gas, based primarily on geological reports and modification of national uranium resource evaluation data. 19 XXX(From Cothern and Smith, 1987, p. 108)
Figure 6. Map of the United States showing the distribution of radon in ground water supplies in the U.S.A. by County. (19) XXX (From Cothern and Smith, p.118)
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