Photographic guide to selected external defect indicators and associated internal defects in black walnut
By: Everette D. Rast, John A. Beaton, David L. Sonderman
Contributors: Beaton, John A., author; Sonderman, David L., author; Northeastern Forest Experiment Station (Radnor, Pa.)
Series: Research paper NE -- 617; Research paper NE (Broomall, Pa. : 1988) -- 617
Publisher: United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station
Published: 1988
Place of publication: Broomall, PA
Language: eng
Number of pages: 24
Subjects: Eastern black walnut; Pictorial works; Defects
Notes: Title from title screen (viewed Aug. 30, 2013).

"May 1988."

Includes bibliographical references (page 24).