Lumber : its manufacture and distribution 著者: Bryant, Ralph Clement

Logging : the principles and general methods of operation in the United States 著者: Bryant, Ralph Clement

The transportation of wood in chutes 著者: Koroleff, Alexander M.

その他の著者: “…Bryant, Ralph Clement…”

Harvesting timber crops 著者: Wackerman, A.E

その他の著者: “…Bryant, Ralph Clement, ded…”