Canadian Subject Headings (CSH) is a list of subject headings in the English language, using controlled vocabulary, to access and express the subject content of documents on Canada and Canadian topics
Using Library of Congress Authorities, you can browse and view authority headings for Subject, Name, Title and Name/Title combinations; and download authority records in MARC format for use in a local library system
The Dublin Core Metadata Initiative (DCMI) is an open organization, supporting innovation in metadata design and best practices across a broad range of purposes and business models. The word "metadata" means "data about data"
The five MARC 21 communication formats are widely used standards for the representation and exchange of bibliographic, authority, holdings, classification, and community information data in machine-readable form
MeSH is the National Library of Medicine's controlled vocabulary thesaurus. It consists of sets of terms naming descriptors in a hierarchical structure that permits searching at various levels of specificity
