Canadian Forest Service Publications
Cumulative degree-days for estimating peak occurrence of fourth instar larvae of the spruce budworm, Choristoneura fumiferana ( Lepidoptera: Tortricidae) 1983. Lim, K.P. Canadian Forestry Service, Newfoundland Forest Research Centre, St. John’s, Newfoundland. Information Report N-X-217. 8 p.
Issued by: Atlantic Forestry Centre
Catalog ID: 6775