Economical designing of timber trestle bridges
By: by A. L. Johnson.
Series: U.S. Dept. of agriculture. Division of forestry -- Bulletin no. 12. -- Timber physics series [from old catalog]
Publisher: Govt. print. off.
Published: 1896
Place of publication: Washington
Language: eng
Number of pages: 57
Subjects: Trestles; Strength of materials; Wooden bridges