skos:altLabel | - Douglas
- Oregon
- firs
- fir
- 'Oregon'
- Douglas Fir
- Douglas fir (''Pseudotsuga menziesii'')
- Douglas fir forest
- Douglas fir forests
- Douglas firs
- Douglas-Fir
- Douglas-fir
- Interior Douglas fir
- Oregon pine
- Pseudotsuga menziesii
- Pseuotsuga menziezii
- Pseutotsuga menziesii
- douglas
- douglas fir
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