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Agricola
Bibliographic records from the U.S. Department of Agriculture's National Agricultural Library. Coverage dates back to 1970 and includes more than 2.5 million citations such as journal articles, monographs, theses, patents, software, audiovisual materials, and technical reports related to agriculture.

Agriculture Chemical Use
Includes estimates for all counties in the conterminous United States on the annual use of 96 herbicides, sales of nitrigen fertilizer, agricultural expenses, land use, chemical use, livestock holdings, cropping practices, and maps.

Agriculture and Global Environmental Change
A thematic guide with information on human causes of global climate change related to agriculture, impacts of global climate change on ariculture, adaptations to global climate change, farm policy options, indigenous agricultural and environmental knowledge systems.

Food & Agricultural Organization
Summaries of national forestry plans and statistics, production of agricultureal commodities and forest products, land use and cover, sustainable development, food supply. Availabe in English, French and Spanish.

Water-Related Terms Glossary*

Colorado Water Knowledge
Stream processes, geology, water history, climate, major river basins, conservation methods, fish and aquatic insects, wetlands, water quality, transmountian diversions, interstate compacts.

Envrionmental Indicators of Water Quality in the U.S.
U.S. water resources, effects of human activities, water quality objectives, monitoring, pollutants, species at risk, wetland acreage, and more.

National Water Conditions
Online periodical about streamflow conditions, surface water, drought, ph of rain, and other water data.

State Fact Sheets: Water Quality
Individual summaries on water quality survey data.

Watershedds
Designed to help watershed managers and land treatment personnel identify their water quality problems and select best management practices. Includes information on water quality issues and effects of pollutants on humans and aquatic life.

Earth Science Links
Links to information on water, soil conservation, waste and waste management, chemicals, pollution, and toxic substances.