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Syndication

Tue, 10 June 2014
Norteko Ferrokarrilla/2014-06-02/Lurzalea: brontzea eta burdina

Lurrak gizakiari eman dizkionen artean metalak dira baliabide garrantzitsuak. Baina salbuespen gutxi batzuekin kenduta, gizakiak metala lantzen ikasi behar izan zuen. Eta lanketa horretan, lehen metal (edo aleazio) garrantzitsuak brontzea eta burdina izan ziren. JUANMA GALLEGOk, gure lurzaleak bi horietaz hitz egin digu.

Direct download: NFXVIII-39c.mp3
Category:science -- posted at: 3:41am EDT