<https://educationforum.ipbhost.com/topic/19-aviation/page/2/#comment-2583>
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"The “Aviation” has been placed by Virtual school webmaster Young Chui Hsia at History department at my request.  It can be view at: \n http://vs.eun.org/eun.org2/eun/en/vs-histo...ang=en&amp;ov=33080 \nJuan Carlos sent me his contribution before my winter holiday and asked me to add it to others. I will do this asap. \n(Why “The Olympic games project” is not visible at History department is a puzzle for me. I will look into this matter right now.) "
<https://educationforum.ipbhost.com/topic/19-aviation/page/2/?tab=comments#comment-695>