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The Holocaust Encyclopedia is an online encyclopedia, published by the United States Holocaust Memorial Museum, offering detailed information about The Holocaust and the events surrounding it.

The encyclopedia is organized by the following topics:

It includes a number of articles and other resources:

Holocaust Encyclopedia materials and other resources are available in multiple languages: Arabic, Greek, Spanish, French, Italian, Korean, Russian, Urdu, Farsi, Bahasa Indonesia, Portuguese, Turkish, Chinese

It includes a learning site for students. Organized by theme, the site uses text, photographs, maps, artifacts, and personal histories to provide an overview of the Holocaust.