Lumber defect detection by ultrasonics
By: by Kent A. McDonald
Contributors: Forest Products Laboratory (U.S.); United States. Forest Service
Series: USDA Forest Service research paper FPL ; 311
Publisher: Dept. of Agriculture, Forest Service, Forest Products Laboratory
Published: 1978
Place of publication: Madison, Wis
Language: eng
Number of pages: 20
Subjects: Lumber -- Inspection; Ultrasonic testing