A cartographic history of spruce budworm defoliation from 1967 to 1981 in eastern North America /
| Main Author: | |
|---|---|
| Format: | Government Document Book |
| Language: | English French |
| Published: |
[Ottawa] :
Canadian Forestry Service, Environment Canada,
1983
|
| Series: | Information report (Canadian Forestry Service) ;
DPC-X-14 |
| Subjects: |