Collar crack of birch
By: [Alex L. Shigo]
Contributors: Northeastern Forest Experiment Station (Radnor, Pa.)
Series: U.S. forest service research note -- NE-22; U.S. Forest Service research note NE -- 22.; Research note NE -- 22.
Publisher: Northeastern Forest Experiment Station, Forest Service, U. S. Dept. of Agriculture
Published: 1964
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Birch; Diseases and pests
Notes: Also available online.