AGRICOLA serves as the catalog and index to the collections of the National Agricultural Library. The records describe publications and resources encompassing all aspects of agriculture and allied disciplines, including animal and veterinary sciences, entomology, plant sciences, forestry, aquaculture and fisheries, farming and farming systems, agricultural economics, extension and education, food and human nutrition, and earth and environmental sciences. AGRICOLA is organized into two data sets. The NAL Public Access Catalog contains citations to books, audiovisuals, serials, and other materials. The Article Citation Database contains citations, many with abstracts, to journal articles, book chapters, reports, and reprints.