Surf these sites: Getty Research Insitute -- The Art and Architecture Thesaurus Browser, ontology. Medical Subject Headings -- The Medical Subject Headings comprise the National Library of Medicine''s controlled vocabulary used for indexing articles, for cataloging books and other holdings, and for searching MeSH-indexed databases, including MEDLINE. This site includes Changes in 1999 MeSH; MeSH files available for download, MeSH publications ordering information, MeSH Browser, MeSH Staff biographies and email addresses, and Suggestions for MeSH vocabulary. Physics and Astronomy Classification Scheme (PACS) -- A subject-specific, heirarchical classification scheme prepared by the American Institute of Physics (AIP) in collaboration with certain other members of the International Council on Scientific and Technical Information (ICSTI). The site provides the 1996, 1998, and 1999 versions, browsable on-line, or download them in PDF, text, or WordPerfect format. Preservation Descriptors & Classification Schemes -- Classification schema related to preservation, drawn from a number of sources, including LISA, ERIC, Art Index, Applied Science and Technology Index, and seven others.
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