00507nam 2200157z- 450 9910712579703321(CKB)5470000002494353(EXLCZ)99547000000249435320230509c1978uuuu -u- -engLumber defect detection by ultrasonicsMadison, WisForest Products Laboratory, Forest Service, U.S. Department of AgricultureBOOK9910712579703321Lumber defect detection by ultrasonics3277339UNINA