• 4000 Years of Women in Science
  
  The History of Women in Science from Antiquity to the Nineteenth Century
  biographies education herstory history natural philosophy science woman women
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• Absolutely Learn Japanese-Online
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• Accounting Students
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• Acronym Finder
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• American Slave Narratives
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• American Studies Electronic Crossroads
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• Amethyst Galleries Mineral Gallery
  
  Amethyst Galleries' Mineral Gallery is a constantly growing database of mineral descriptions, images, and specimens. The descriptions include searchable mineralogical data, plus other information of interest to students and rock hounds!
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• Anne Frank
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• Anthropology resources on the Internet
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• Artificial Intelligence Repository
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• Ask Eric
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• Benjamin Franklin
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• Biography.com
  
  Explore Bio.com, your source for true stories about notable people. Watch full episodes, read exclusive biographies and discover the unexpected ways you're connected to your favorite celebrities.
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• Biosis
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• Birding on the Web
  
  Welcome to Birder.com! You love wild birds and birdwatching and we are happy you found us!
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• Britannica
  
  Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.
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• Calculus and Mathematica
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• California Academy of Sciences
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• Canadian Rockhound
  
  Share your collection of rocks to other collectors. Ask experts to comment and analyze your collection. Register Now!
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• CIA for Kids
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