Journal of Liaoning Petrochemical University
 
A New Method of Two Dimension Graphs Conceal in AutoCAD
LAN Xiao-min，WANG Sheng-zhi
Journal of Liaoning Petrochemical University . 2011, (3): 70 -73 .  DOI: 10.3696/j.issn.1672-6952.2011.03.019

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