The National Agricultural Library (NAL) provides reference and information services, document delivery, interlibrary loan and interlibrary borrowing services to a variety of audiences. Available services are based on eligibility.
Library Services for USDA Employees
Learn about the library services available to you as a USDA employee including DigiTop/DigiCALS.
Ask a Question
Professional reference staff at the National Agricultural Library can help you find the information you need. Staff members answer questions using authoritative, pertinent resources and produce guides to resources on important topics. Let them help you.
Request Library Materials
NAL loans books and other media and provide photocopies of material in our collection, that may not be readily available from other sources, to libraries and other select groups.
NAL Agricultural Thesaurus
(Tesauro en español)
The NAL Thesaurus is an online tool for browsing agricultural and biological concepts and terminology. The thesaurus arranges terms in a structured format to help find terms of possible interest.