813920  Professional Organizations 

This industry comprises establishments primarily engaged in promoting
the professional interests of their members and the profession as a
whole. These establishments may conduct research; develop statistics;
sponsor quality and certification standards; lobby public officials; 
or publish newsletters, books, or periodicals, for distribution to 
their members. 

The data published with NAICS code 813920 are comprised of the
following SIC industry:

     8621  Professional Organizations