JapanKnowledge is a powerful reference tool for Japanese language and culture provided by NetAdvance Inc. of the Shogakkan Group Holdings, the top 4th publisher in Japan.
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JournalTOCs is the biggest searchable collection of scholarly journal Tables of Contents (TOCs).
Created through a partnership between NASA and the Internet Archive, NASA imagines offers public access to NASA's image, video, and audio collections in a single, searchable resource.
As of June 2, 2011, all PDF versions of books published by the National Academies Press are downloadable to anyone free of charge.
The National Ocean Service (NOS) studies, monitors, and protects coastaland marine areas in the United States.
19th Century Collections Online is a multi-year global digitization and publishing program focusing on archival collections of primary sources providing full-text, fully searchable content.