Similar to 米国国立医学図書館分類法

Library classification

BIBSYS

JEL classification codes

ORCID

ResearcherID

Scopus

Système universitaire de documentation

Library of Congress Control Number

Library of Congress Classification

Library of Congress Classification:Class K -- Law

Library of Congress Classification:Class Q -- Science

Universal Decimal Classification

International Standard Name Identifier

Colon classification

Sibu classification

Knowledge organization

Dewey Decimal Classification

Integrated Authority File

Controlled vocabulary

Nippon Decimal Classification

Faceted classification

Metadata

HESA Ababil