Edukira joan

«Gogortasun»: berrikuspenen arteko aldeak

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t (Autoritate kontrola jartzea)
(Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8)
 
 
== Weblink ==
* [https://web.archive.org/web/20121128201037/http://www.hegewald-peschke.com/info-bereich/guidelines-to-hardness-testing.html Hardness Guide] (english)
 
== Erreferentziak ==