This current release of Industry and Occupation data has changed from the previous release, and tables P066, P067 and P068, as well as profile table 3, Profile of Selected Economic Characteristics, and the narrative profiles, have been corrected as of March 25, 2002. Only the corrected versions of these tables are available. The American Community Survey Industry data follow the guidelines issued in Clarification Memorandum No. 2, "NAICS Alternate Aggregation Structure for Use by U.S. Statistical Agencies," issued by the Office of Management and Budget.