SPRUCE BUDWORMS BIBLIOGRAPHY: SUPPLEMENT 2

by Jennings, D. T.
: UNITED STATES FOREST SERVICE, 1982

Series: United States Forest Service, Miscellaneous Report 268.

SPRUCE BUDWORMS BIBLIOGRAPHY: SUPPLEMENT 1

by Jennings, D. T.
: UNITED STATES FOREST SERVICE, 1981

Series: United States Forest Service, Miscellaneous Report 225.