The spruce budworm on Michigan pine.

Bibliographic Details
Main Author:	Graham, Samuel A. (Samuel Alexander), 1891-1967
Format:	Book
Language:	English
Published:	Ann Arbor : University of Michigan Press, 1935.
Series:	Bulletin (University of Michigan. School of Forestry and Conservation) ; no. 6.
Subjects:	Spruce budworm. Pine > Diseases and pests.

Description
Physical Description:	56 pages : illustrations ; 23 cm.