Wright R-1820 (Danish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Wright R-1820" in Danish language version.

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1web.archive.org

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glasnet.ru

base13.glasnet.ru

Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (russisk). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Arkiveret fra originalen 2009-03-24.

seattlepi.com

blog.seattlepi.com

May, Joseph (8. januar 2013). "Flagship Knoxville — an American Airlines Douglas DC-3". Hearst Seattle Media. Hentet 3. august 2014.

web.archive.org

Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (russisk). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Arkiveret fra originalen 2009-03-24.