Atlapedia Online contains full color physical maps, political maps as well as key facts and statistics on countries of the world.

Containing nearly 51,000 entries (marshalling six and one-half million words on a vast range of topics), and with more than 80,000 hypertext cross-references, the current Sixth Edition is among the most complete and up-to-date encyclopediæ ever produced.

Wikipedia is a multilingual project to create a complete and accurate free content encyclopedia. We started in January 2001 and are currently working on 169862 articles in the English version.

Accès libre aux articles abrégés..

"Encyclopedia Smithsonian helps answer frequently asked questions about the Smithsonian with links to resources on subjects from Art to Zoology."

Rédigé à partir de la 6e édition de la Columbia Encyclopedia.

dictionnaire anglais