Douglas fir use book :
structural data and design tables.
APA Citation
West Coast Lumbermen's Association. (1940). Douglas fir use book: structural data and design tables. Seattle, Wash.: West coast lumbermen's association.
MLA Citation
West Coast Lumbermen's Association. Douglas Fir Use Book: Structural Data And Design Tables. Seattle, Wash.: West coast lumbermen's association, 1940.
Warning: These citations may not always be complete (especially for serials).