Pendulum impact tests of wooden and steel highway guardrail posts
By: by Charles J. Gatchell and Jarvis D. Michie.
Contributors: Michie, Jarvis Dale.
Series: Research paper NE -- 311.
Publisher: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station
Published: 1974
Place of publication: Upper Darby, Pa
Language: eng
Number of pages: 20
Subjects: Roads -- Guard fences -- Testing