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National Diet Library of Japan subject headings
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Library of Congress Subject Headings
LCSH has been actively maintained since 1898 to catalog materials held at the Library of Congress. By virtue of cooperative cataloging other libraries around the United States... -
Lexvo
About Data exposed: Linguistic Data Size of dump and data set: ~40MB Openness Download dump: CC-BY-SA 3.0 license The web service additionally provides some parts that are not...