Guard rail (rail transport) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Guard rail (rail transport)" in English language version.

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books.google.com

Massachusetts Board of Railroad Commissioners (1888). Report of the Board of Railroad Commissioners in Relation to the Accident on the Boston and Maine Railroad (Western Division), Near Bradford, January 10, 1888. Boston: Wright & Potter Printing Company. pp. 3–9.
Donahoe, M (October 1914). "Proper Type of Track Accessories". Railway Engineering and Maintenance of Way. p. 415. Retrieved August 20, 2022.

"Mildura Train Derailment". The Argus. Melbourne. 27 August 1928. p. 16. Retrieved 5 August 2011 – via National Library of Australia.