Historical
ISO 4473:1988
Coniferous and broadleaved tree sawlogs -- Visible defects -- Classification
Refers to the terms and definitions given in ISO 4474. The following six groups are listed in a table in connection with their subgroups and varieties: Knots, shakes, defects of trunk shape, defects of wood structure, defects caused by fungi and damage.
International Organization for Standardization [iso]