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From Self-sufficiency
File:Alternator 1.svg [[Category:Electrical diagrams]](454 × 504 (22 KB)) - 22:31, 2 July 2010File:Hydroelectric dam.svg [[Category:Diagrams of dams]](575 × 390 (46 KB)) - 16:18, 3 July 2010File:Water turbine.jpg [[Category:Cutaway diagrams]](400 × 417 (39 KB)) - 16:21, 3 July 2010File:Tablet press animation.gif [[Category:Animated diagrams]](930 × 648 (190 KB)) - 17:22, 19 September 2010