Log bridge (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Log bridge" in English language version.

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archive.org

National Parks Conference, Department of the Interior (1915). Proceedings of the National parks conference held at Berkeley, California March 11, 12, and 13, 1915. Washington: Government Printing Office. p. 60. Retrieved March 14, 2010. (A log bridge) is a bridge composed of log beams, the logs being in natural condition or hewn, which are thrown across two abutments, and over which traffic may pass.

books.google.com

Bennett, David (2000). "The history and development of bridges". In Ryall, M. J.; Parke, G.A.R.; Harding, J.E. (eds.). The manual of bridge engineering (Google books). London: Thomas Telford. p. 1. ISBN 978-0-7277-2774-9. Retrieved March 14, 2010.