. . . "Beneath the Skin"@en . . . . . "Comic - Part 4 of 4"@en . . . . . "Tenth Doctor"@en . . "Cybermen have been using upgraded humans on Centuria to mine special gems called Hargstones. But what is their plan?"@en . "Enemy Mine"@en . . "Time of the Cybermen (comic story)"@en . "Cybermen have been using upgraded humans on Centuria to mine special gems called Hargstones. But what is their plan?"@en . . "Time of the Cybermen"@en . "2007-02-07"^^ . "GE Fabbri Ltd"@en . . . . . "Centuria Central, Planet Centuria"@en . .