AutoCAD 2014 tutorial: first Level: 2d fundamentals.
Shih, Randy H. 2013. AutoCAD 2014 tutorial: first Level: 2d fundamentals. Mission, Kansad: SDC Publications
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Shih, Randy H. 2013. AutoCAD 2014 tutorial: first Level: 2d fundamentals. Mission, Kansad: SDC Publications