FEDERAL:
- Western Center for Urban Forestry Research and Education (WCUFRE)
- Institute of Forest Genetics Dendrome Project
- USDA Home Page
- USDA Animal and Plant Health Inspection Service (APHIS)
- USDA Agricultural Research Service (ARS)
- USDA Cooperative State Research, Education and Extension Service (CSREES)
- USDA National Agricultural Statistics Service (NASS)
STATE OF CALIFORNIA:
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