Subject
- Phytophthora ramorum -- Control -- Oregon3
- Sudden oak death -- Oregon -- Prevention3
- Oak -- Diseases and pests -- Control -- California2
- Oak -- Diseases and pests -- Control -- Oregon2
- Phytophthora ramorum -- Control -- California2
- Plant quarantine -- California2
- Plant quarantine -- Oregon2
- Sudden oak death -- California -- Prevention2
- Phytophthora ramorum -- Control -- Washington (State)1
- Sudden oak death -- Oregon1
- Sudden oak death -- Washington (State) -- Prevention1