The North American Industry Classification System (NAICS) helps researchers retrieve data about industries from a number of surveys conducted by government agencies. The numeric NAICS codes (up to 6-digits) serve as identifiers which make it easier to compile comparable data from multiple sources. Find NAICS and SIC codes or United Nations and Broad Economics Categories and data parsed by NAICS codes can be retrieved from these sources:
OECD iLibrary is the Organisation for European Cooperation and Development’s online collection of books, articles, and research studies addressing economic, industrial, business, and consumer concerns around the world.