Treesearch
Seed zones and breeding zones for white pine in the Cascade Range of Washington and Oregon.
| Authors: | Robert K. Campbell, Albert I. Sugano |
| Year: | 1989 |
| Type: | Research Paper |
| Station: | Pacific Northwest Research Station |
| DOI: | https://doi.org/10.2737/PNW-RP-407 |
| Source: | Res. Pap. PNW-RP-407. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p |
Download (PDF 1.01 MB): https://research.fs.usda.gov/download/treesearch/9240.pdf