1. Title 13, United States Code, Section 142(a).
2. The Standard Statistical Establishment List Program,1979
3. The Standard Industrial Classification Manual: 1972 and 1977 Supplement are sold by the GPO (Washington, DC 20402).
4. Making Economic Census Data Available;Zeisset;Government Information Quarterly,1987
5. Making Economic Census Data Available;Zeisset;Government Information Quarterly,1987