1.Previous
3.Next

*** Wikipedia – largest encyclopedia in the world. It is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its more than 20 million articles (over 6.89 million in English) have been written collaboratively by volunteers around the world. Almost all of its articles can be edited by anyone with access to the site, and it has about 100,000 regularly active contributors.
* Specific knowledge bases

1.Previous
3.Next