Library Catalogs & Services
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Library Catalogs: NLM Catalog & LocatorPlus
NLM Catalog: start here to find books, journals, and audiovisuals
LocatorPlus: for holdings, item availability, MARC 21, and more. -
IndexCat
Online version of the Index-Catalogue of the Library of the Surgeon-General's Office.
Also see:
Modern Manuscripts (Finding Aids) | Historical Images (prints and photographs) -
Reference and Customer Services
Librarians help locate resources in the biomedical sciences, and answer questions about NLM's products and services.
Visiting the Library | Contact NLM Customer Service -
Accessing the Collections at NLM
Libraries may borrow books or obtain copies of articles from NLM. Individuals who need to borrow library materials should make a request through a local library. Also see: Interlibrary Loan and Document Delivery | DOCLINE® interlibrary loan system for libraries
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Medical Subject Headings (MeSH®)
NLM controlled subject vocabulary used for indexing and cataloging.
MeSH Home Page | MeSH Browser -
Cataloging and Metadata Management
NLM catalogs biomedical materials in more than 45 languages and provides bibliographic services to the biomedical library community.
NLM Classification used to organize library materials -
Collection Development and Acquisitions
Policies and guidelines for building NLM's Collection.
Collection Development Guidelines -
Preservation and Collection Management
NLM and the Network of the National Library of Medicine (NNLM) are working together to ensure the preservation of and continued access to the literature through a national cooperative medical serials print retention program. MedPrint – the medical serials print preservation program
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The National Library of Medicine Data Distribution
How to lease NLM databases or download data.
Last Reviewed: March 2, 2020