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Google Video

Search and browse all kinds of videos, hosted on sites all over the web, including Google, YouTube, MySpace, MetaCafe, GoFish, Vimeo, Biku, and Yahoo Video. サイト情報

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Google Groups

Searchable archive of more than 700 million Usenet postings from a period of more than 20 years. サイト情報

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Google Scholar

Provides a search of scholarly literature across many disciplines and sources, including theses, books, abstracts and articles. サイト情報