AGRICOLA AGRICOLA, created by the National Agricultural Library (NAL), is a combination of two databases: NAL's Online Public Access Catalog and a Journal Article Citation Index which includes some abstracts. It covers agriculturally-related subjects 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.