Spruce budworm parasites in Maine : a reference manual for collection and identification of common species / [by David A. Tilles and Norman E. Woodley]

by Tilles, David A
[Washington, D.C.?] : U.S. Dept. of Agriculture, Forest Service, Cooperative State Research Service, [1984].

Series: Spruce budworms handbook
Agriculture handbook (United States. Dept. of Agriculture) ; no. 616