How to identify hypoxylon canker of aspen
By: Arthur L. Schipper, Robert L. Anderson. --
Contributors: Anderson, Robert Lee, 1944-; North Central Forest Experiment Station (Saint Paul, Minn.)
Publisher: North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1976
Place of publication: St. Paul, Minn
Language: eng
Subjects: Hypoxylon; Aspen; Diseases and pests