* Some content adapted from the [http://wikinfo.org/index.php/ Wikinfo] article, [http://wikinfo.org/wiki.php?title=Cybernetics&oldid=57542 "Cybernetics"] under the [[GNU Free Documentation License]].
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* Some content adapted from the [http://wikinfo.org/ Wikinfo] article, [http://wikinfo.org/wiki.php?title=Cybernetics&oldid=57542 "Cybernetics"] under the [[GNU Free Documentation License]].