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Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker
| Content Provider | Internet Archive |
|---|---|
| Author | Copes, Donald L Pacific Northwest Forest and Range Experiment Station (Portland, Or.) |
| Organization | U.S. Department of Agriculture, National Agricultural Library |
| Language | English |
| Publisher | [Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station |
| Publisher Date | 1985-01-01 |
| Access Restriction | Open |
| Subject Keyword | Conifers Seeds Harvesting Douglas fir Pruning Conifers Douglas fir |
| Content Type | Text |
| Resource Type | Book |