Photographic Guide to Selected External Defect Indicators and Associated Internal Defects in Black Walnut
Everette D. Rast
Jan 1988 · U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station
Ebook
24
Pages
About this ebook
S2To properly classify or grade logs or trees, one must be able to correctly identify defect indicators and assess the effect of the underlying defect on possible end products. This guide aids the individual in identifying the surface defect indicator and also shows the progressive stages of the defect throughout its development for black walnut. It illustrates and describes 10 types of external defect indicators and associated defects that are particularly difficult to evaluate.S3.
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