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Some effects of predaceous birds and ants on the western spruce budworm on conifer seedlings
Content Provider | Internet Archive |
---|---|
Author | Campbell, Robert W. cn Pacific Northwest Forest and Range Experiment Station (Portland, Or.) cn Canada/United States Spruce Budworms Program. cn |
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 | 1984-01-01 |
Access Restriction | Open |
Subject Keyword | Western spruce budworm Biological control Conifers Seeds |
Content Type | Text |
Resource Type | Book |