Infestation trends of balsam woolly aphid in an Abies alba plantation in North Carolina
By: [Gene D. Amman and Gerhard F. Fedde].
Contributors: Fedde, Gerhard F.
Series: Research note SE -- 148.; Research note SE -- 148.
Publisher: Southeastern Forest Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1971
Place of publication: Asheville, N.C
Language: eng
Subjects: Balsam woolly adelgid -- North Carolina; Silver fir -- North Carolina -- Diseases and pests
Notes: Caption title.

"January 1971."

Includes bibliographical references (p. 5-6).