Websites/Links
Dictionary.com 2012, escalator, Dictionary.com, viewed 23 July 2012, <http://dictionary.reference.com/browse/escalator?s=t>.
SafetyNetSystems Ltd., S 2012, History of Escalators, SafetyNetSystems Ltd., viewed 14 July 2012, <http://movingstaircase.com/how-escalator-work.html>. Bellis, M 2012, The History of Escalators, About.com, accessed 14 July 2012, <http://inventors.about.com/library/inventors/blescalator.htm>. Ml, T 2005, ESCALATOR, The Great Idea Finder, accessed 17 june 2012, <http://www.ideafinder.com/history/inventions/escalator.htm>. |
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