• Mathematica
  
  Wolfram Library Archive has thousands of downloadable resources for Mathematica and other Wolfram products, collected over the full history of Wolfram Research
  download mathsource
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• STAT-USA/Internet
  
  STAT-USA/Internet is the trusted source for economic statistics, international market research, and trade leads from across the Federal government.
  bank data economics economy exporting exports financial gdp imports indicators international mark national ntdb stat-usa trade
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks internet reference sites stat-usa by 6 users
• Infoplease
  
  Information Please is the world's largest free reference site. Here you can find facts on thousands of subjects including sports, entertainment, technology, business, education, and health.
  almanac atlas biograp dictionary encyclopedia entertainment internet on-line records sports states statistics u.s united world
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• CredoReference
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks credoreference reference sites by 5 users
• Open Site
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks open reference sites by 6 users
• WWW Virtual Library
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks library reference sites virtual by 27 users
• Browse Topics
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• iTools
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks itools reference sites by 2 users
• Virtual Reference Shelf
  
  Ask a librarian: An online reference service from the Library of Congress that allows researchers to submit reference questions to Library of Congress reading rooms and receive expert research assistance (within 5 business days.)
  answer ask congress digital librarian library online question reading reference room service virtual
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• Classic Encyclopedia
  By AjTivol in Bookmarks Toolbar > 9.Bookmarks > Reference Sites with 9.bookmarks classic encyclopedia reference sites by 7 users

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