Wikipedia is a free content, multilingual online encyclopedia written and maintained by a community of volunteer contributors through a model of open collaboration. It is the largest and most-read reference work in history. Wikipedia originally developed from another encyclopedia project called Nupedia. CD-ROM encyclopedias
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation. English 6 458 000+ articles 日本語 1 314 000+ 記事
The Simple English Wikipedia is a free encyclopedia for people who are learning English. The Simple English Wikipedia's articles can be used to help with school homework or just for the fun of learning about new ideas. Non-English Wikipedias can also translate from the articles here.
The Jewish Encyclopedia: A Descriptive Record of the History, Religion, Literature, and Customs of the Jewish People from the Earliest Times to the Present Day is an English-language encyclopedia containing over 15,000 articles on the history, culture, and state of Judaism up to the early 20th century.
Baobab is the common name of a genus of trees (Adansonia).There are a total of eight types of its kind: six species live in the drier parts of Madagascar, two in mainland Africa, one in Australia and three in India.