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The National Geochemical Survey - database and documentation
The USGS, in collaboration with other federal and state government agencies, industry, and academia, is conducting the National Geochemical Survey (NGS) to produce a body of... -
NIST Atomic Energy Levels and Spectra Bibliographic Database
References contained in this database are from Bibliography on Atomic Energy Levels and Spectra, NBS Special Publication 363 and Supplements, as well as current references since... -
SRM 3147a Samarium (Sm) Standard Solution Lot No. 140115
This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of samarium. A unit of SRM 3147a consists of...