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EMANATION OF RADON 222 FROM SOILS AND ITS USE AS A TRACER
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JOURNAL OF GEOPHYSICAL RESEARCH,
1965, 70 (20)
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RADON FLUX AT THE EARTH-AIR INTERFACE
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1960, 65 (10)
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[13]
WORMELL TW, UNPUBLISHED