Agricola This link opens in a new windowAgricola (AGRICultural OnLine Access) is a bibliographic database of citations to the agricultural literature created by the US National Agricultural Library (NAL) and its cooperators. 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