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Britannica Nobel Prize: Helium
Detailed overview and data. (infos)Visual Elements: Helium
Image, animation, discovery, uses, physical information, and key isotopes. (infos)
It's Elemental: Helium
Basic physical and historical information. (infos)
ChemicalElements.com: Helium
Basic information, atomic structure, and table of isotopes. (infos)
Especiál Gas Inc.: Helium
Numeric data, uses, and general information. (infos)
USGS Minerals Information: Helium
Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). (infos)
Helium
Data tables and historic information. (infos)
Corrosionsource.com: Helium
History, sources, properties, isotopes, and uses. (infos)
EnvironmentalChemistry.com: Helium
Atomic structure, chemical and physical properties, and table of nuclides. (infos)
WebElements: Helium
Extensive information on history, uses, occurrence, and properties of the element. (infos)