The NAL (National Agricultural Library) Catalog, AGRICOLA (AGRICultural OnLine Access) provides citations to agricultural literature. Coverage includes agriculture and allied fields, including, animal and veterinary sciences, entomology, plant sciences, forestry, aquaculture and fisheries, farming, agricultural economics, extension and education, food and human nutrition, and earth and environmental sciences.
Resource URL: http://agricola.nal.usda.gov
Coverage Date: 15th Century to present
Online Help: http://agricola.nal.usda.gov/help/quicksearch.html