North American Industry Classification System (NAICS) 1997

• 81 - Other Services (except Public Administration)
• 813 - Religious, Grant-Making, Civic, and Professional and Similar Organizations
• 8139 - Business, Professional, Labour and Other Membership Organizations

81391 - Business Associations

This industry comprises establishments primarily engaged in promoting the business interests of their members. These establishments may conduct research on new products and services, publish newsletters, develop market statistics, or sponsor quality and certification standards.