Forest Character and vulnerability of balsam fir to spruce budworm in Minnesota
Date Published: 1969
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- Batzer, Harold O
US Forest Service
Vulnerability of Balsam Fir to Spruce Budworm was studied from 1952 to 1962 in northeastern Minnesota. Data on tree injury were collected annually on permanent plots in 23 balsam fir stands representing a variety of stand conditions.
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