Allowable bending stresses of wood for use in portable wood ladders
By: [by Fred Werren].
Contributors: Forest Products Laboratory (U.S.).; United States. Forest Service.
Series: U.S.D.A. Forest Service general technical report FPL ; 5
Publisher: Dept. of Agriculture, Forest Service, Forest Products Laboratory
Published: 1975
Place of publication: Madison, Wis
Language: eng
Subjects: Strains and stresses.; Ladders -- Standards.; Wood.
Notes: Cover title.

Also issued online.