Changes related to "Mercury vapour turbine"
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17 April 2014
- (diff | hist) . . Heat engine; 19:21 . . (-4,410) . . Hhhippo (Reverted 1 edit by 18.104.22.168 (talk): See Wikipedia:Sockpuppet investigations/Kay Uwe Böhm. (TW))
- (diff | hist) . . Heat engine; 18:05 . . (+4,410) . . 22.214.171.124 (→Overview)