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| Oznaka upozorenja = {{Oznake upozorenja|-}}<br />
| Oznake upozorenja R = {{Oznake upozorenja R|?}}
| Oznake upozorenja S = {{Oznake upozorenja S|9|23}}<ref>[http:// name="gasekatalog.airliquide.de/sdb/061a__helium.pdf Podaci o heliju]<"/ref>
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== Reference ==
{{refspisak|2|refs=
<ref name="gasekatalog">[http://gasekatalog.airliquide.de/sdb/061a__helium.pdf Podaci o heliju]</ref>
<ref name="crc">[http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf Handbook of Chemistry and Physics 81. izd.], CRC press, {{ISBN|978-0-8493-0481-1}}</ref>
<ref name="away">Melinda Rose, [http://www.photonics.com/Article.aspx?AID=35225 Photonics Spectra], oktobar 2008.</ref>
{{Commonscat|Helium}}
* [http://education.jlab.org/itselemental/ele002.html Helium (Jefferson lab)]
* [http://www.periodicvideos.com/videos/002.htm Helij] na stranici Periodic videos, Univerzitet u Nottinghamu
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