The spruce budworm on Michigan pine
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Ann Arbor :
University of Michigan Press,
1935
Ann Arbor, 1935 Ann Arbor : 1935 |
| Series: | Bulletin (University of Michigan. School of Forestry and Conservation) ;
no. 6 |
| Subjects: |