Main Professional Societies
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<li> <a href="http://www.ams.org">American Mathematical Society (AMS)</a>
<li> <a href="http://www.ncctm.org/">North Carolina Council of Teaching Mathematics (NCCTM)</a>
<li> <a href="http://www.siam.org">Society for Industrial and Applied Mathematics (SIAM)</a> 
<li> <a href="http://ncmatyc.matyc.org">North Carolina Mathematics Association of 
Two-Year Colleges (NCMATYC)</a>
<li> <a href="http://www.maa.org">Mathematics Association of America (MAA)</a>