County Business Patterns
C 3.204/4:
Economic Census (1997): Auxiliaries, Excluding Corporate, Subsidiary, and Regional
Managing Offices, Geographic Area Series, United States and States
C 3.277:
Economic Census (1997): Maps
C 3.277:
Export America
C 61.18/2:
North American Industry Classification System: United States, 1997
PREX 2.6/2:IN 27/997/
Standard Industrial Classification Manual 1987
PREX 2.6/2:IN 27/987
Survey of Current Business
C 59.11:
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