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| pino oregón (Pseudotsuga douglasii, Pseudotsuga menziesii, Pseudotsuga taxifolia); abeto de California (Pseudotsuga douglasii, Pseudotsuga menziesii, Pseudotsuga taxifolia); abeto de Douglas (Pseudotsuga douglasii, Pseudotsuga menziesii, Pseudotsuga taxifolia) | |||
| sapin douglas: 10 phrases in 4 subjects |
| Agriculture | 5 |
| Entomology | 2 |
| Forestry | 2 |
| Pest control | 1 |