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https://www.britannica.com/ Todo el mundo

Encyclopædia Britannica, the oldest English-language general encyclopaedia. The Encyclopædia Britannica was first published in 1768, when it began to appear in Edinburgh, Scotland.

Enciclopedias online General

Scholarpedia

http://www.scholarpedia.org/article/Main_Page/ Todo el mundo

Scholarpedia is a peer-reviewed open-access encyclopedia written and maintained by scholarly experts from around the world. ... Scholarpedia and Wikipedia are alike in many respects: both allow anyone to propose revisions to almost any ...

Enciclopedias online General

Wikipedia

https://en.wikipedia.org/wiki/Main_Page Todo el mundo

Wikipedia (/ˌwɪkɪˈpiːdiə/ (About this sound listen) WIK-i-PEE-dee-ə or /ˌwɪkiˈpiːdiə/ (About this sound listen) WIK-ee-PEE-dee-ə) is a multilingual, web-based, free-content encyclopedia project supported by the Wikimedia Foundation and ...

Enciclopedias online General Aplicaciones móviles Apple App Store Books and Reference ...

Citizendium

http://en.citizendium.org/ Todo el mundo

Citizendium is an English-language wiki-based free encyclopedia project launched by Larry Sanger, who had previously co-founded Wikipedia in 2001.

Enciclopedias online General

Our World in Data

https://ourworldindata.org/ Todo el mundo

Poverty, disease, hunger, climate change, war, existential risks, and inequality: the world faces many great and terrifying problems. It is these large problems that our work at Our World in Data focuses on. Thanks to the work of thous ...

Enciclopedias online Politics, law, and history

World Flora Online

https://worldfloraonline.org/ Todo el mundo

World Flora Online is the international initiative to achieve Target 1 of the Global Strategy for Plant Conservation and provides a global overview of the diversity of plant species. It is the essential tool for conservation planners, ...

Enciclopedias online Life sciences

WikEM

https://wikem.org/ Todo el mundo

WikEM, The Global Emergency Medicine Wiki, is the world's largest and most popular emergency medicine open-access reference resource. Our highly acclaimed content is freely available via the internet and our dedicated mobile applicatio ...