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This category is concerned with NMR, EPR, MRI and NQR. There are categories for user guides, commercial vendors of NMR systems and supplies, NMR theory, magnet safety, shimming, in short nearly everything to do with the use, repair and operation of a NMR, EPR, MRI or NQR system. 07/23/00
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EnvironmentalChemistry.com: Radon
http://environmentalchemistry.com/yogi/periodic/Rn.html