AAPG Datapages is the "search-and-retrieval database" of the American Association of Petroleum Geologists. Founded in 1917, the American Association of Petroleum Geologists is currently the world's largest professional geological society.
The membership of AAPG includes geologists, geophysicists, CEOs, managers, consultants, students and academicians. The purpose of the organization is to foster scientific research, advance the science of geology, promote technology and inspire high professional conduct.
AGRICOLA serves as the catalog and index of the U.S. National Agricultural Library. All aspects of agriculture and allied disciplines are covered,
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.