National Route 1 (Vietnam) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "National Route 1 (Vietnam)" in English language version.

refsWebsite

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low place

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19engrvn.org

"Our History" (PDF). 19th Combat Engineer Btn., Vietnam. Retrieved December 22, 2019.

navybmr.com

"Planning and design of Roads, Airfields, and Heliports in the theater of operations" (PDF). Department of the Army. 1994. Retrieved 2019-12-22.