Douglas fir use book : structural data and design tables.

Bibliographic Details
Corporate Author:	West Coast Lumbermen's Association
Format:	Book
Language:	English
Published:	Portland, Or. : The Association, ©1958.
Subjects:	Douglas fir. Wood > Tables. Strength of materials. Strains and stresses. Pseudotsuga Douglas de Menzies. Résistance des matériaux. Contraintes (Mécanique) Bois > Tables. strength of materials. stress. strain. Wood. Tables.

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