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Radium bath house postcard.
An example of the element Radon

Sample Image
Radon Radium bath house postcard
Radium bath house postcard.
Postcard about a radium bath house, listed here because most of the radioactivity in the water was probably from radon, not radium.
Source: eBay seller beckyj29
Contributor: Theodore Gray
Acquired: 25 April, 2009
Text Updated: 25 April, 2009
Price: $1.25
Size: 6"
Purity: 0%
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