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PITCat - Library Catalog
Use PITCat to search the library's collection of books, journals, newspapers, databases, and resources.
Use your my.pit.edu username and password to log into PITCat.
North American Industry Classification System (NAICS)
A 6-digit coding system to categorize industries. Replaced the SIC system (see below).
Standard Industrial Classification (SIC)
A four-digit classification system developed in the 1930's. No longer being revised, but still commonly used in many business databases. Some business data providers have added specificity to the SIC by adding extra digits, but these aren't standardized. An example of 6-digit codes is from Centurion Lists.
International Standard Industrial Classification (ISIC)SIC)
Maintained by the U.N. Statistics Division. Used in a number of international databases, such as ILO's LABORSTA. Rev.4 is the current version. See link on sidebar at the ISIC site to other available classifications.