Differences between heartwood and sapwood.
Contributors: Forest Products Laboratory (U.S.)
Series: Technical note -- no. 189.; Technical note (Forest Products Laboratory (U.S.)) -- no. 189.
Publisher: Forest Products Laboratory, U.S. Forest Service
Published: 1923
Place of publication: Madison, Wis
Language: eng
Subjects: Sapwood.; Heartwood.
Notes: Caption title.

Also issued online.