Helio: berrikuspenen arteko aldeak
Ezabatutako edukia Gehitutako edukia
t Autoritate kontrola jartzea |
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245. lerroa:
== Kanpo estekak ==
* {{en}} [http://www.webelements.com/webelements/elements/text/He/index.html Web Elements]
* {{en}} [http://environmentalchemistry.com/yogi/periodic/He.html Environmental Chemistry]
* {{en}} [http://education.jlab.org/itselemental/ele002.html It's elemental]
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