adda.org: Adda - Design Drafting, Technical Illustration, Digital Design, Graphic Arts
The ADDA is an individual membership society for the design drafting and digital design community across all industries.
cadsociety.org: The Cad Society - A Not-For-Profit Organization Which Has The Goal Of Encouragin
Join The CAD Society, an association which has the goal of fostering a sense of community and encouraging open communication among those who make their living within the ...
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