Ready Reference

 Library of Congress Classification System - Compiled by Matt T. Rosenberg

The National Library of Medicine Classification

 Library of Congress - LC Catalogs, Research tools, Thomas: Legislative Information, etc.

 1997 NAICS and 1987 SIC Correspondence Tables - North American Industry Classification System

 Standard Occupational Classification - SOC Code List

 Occupational Outlook Handbook - Bureau of Labor Statistics, U.S. Department of Labor.

 Statistical Abstract of the United States - Official statistics by U.S. Census Bureau

 Foreign Labor Statistics - Bureau of Labor Statistics, U.S. Department of Labor.

 The CIA World Factbook - Basic economic, social, political, and geographical information.

Your Guide to the Religions of the World BBC World Service

 Portals to the World - Selected by Library of Congress subject experts

 The Old Farmer's Almanac - First published in 1792, now it's online!

 Information Please - Almanac reference, dictionary, encyclopedia, and atlas.

 Guinness World Records

 The Internet Archive - "Universal access to human knowledge."

County Health Rankings longevity, obesity, air pollution, and other facts and figures

Index Mundi country facts

Last updated: 3/11/11

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