German submarine U-70 (1940) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "German submarine U-70 (1940)" in English language version.

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books.google.com

Gröner 1991, pp. 43–46. Gröner, Eric; Jung, Dieter; Maass, Martin (1991). German Warships 1815-1945: U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime. ISBN 0-85177-593-4.

Helgason, Guðmundur. "The Type VIIC boat U-70". German U-boats of WWII – uboat.net. Archived from the original on 3 May 2009. Retrieved 22 December 2009.
Helgason, Guðmundur. "Patrol of U-boat U-70 from 20 February 1941 to 7 March 1941". German U-boats of WWII – uboat.net. Archived from the original on 21 November 2008. Retrieved 22 December 2009.
Helgason, Guðmundur. "Göteborg (Steam merchant)". German U-boats of WWII – uboat.net. Archived from the original on 12 June 2010. Retrieved 22 December 2009.
Helgason, Guðmundur. "Convoy OB-293". German U-boats of WWII – uboat.net. Archived from the original on 11 April 2021. Retrieved 22 December 2009.
Helgason, Guðmundur. "Athelbeach (Motor tanker)". German U-boats of WWII – uboat.net. Archived from the original on 2 February 2016. Retrieved 22 December 2009.
Helgason, Guðmundur. "Delilian (Steam merchant)". German U-boats of WWII – uboat.net. Archived from the original on 2 February 2016. Retrieved 22 December 2009.
Helgason, Guðmundur. "Mijdrecht (Motor tanker)". German U-boats of WWII – uboat.net. Archived from the original on 12 June 2010. Retrieved 22 December 2009.
Helgason, Guðmundur. "Ships hit by U-70". German U-boats of WWII – uboat.net. Archived from the original on 5 September 2008. Retrieved 25 November 2012.

Helgason, Guðmundur. "The Type VIIC boat U-70". German U-boats of WWII – uboat.net. Archived from the original on 3 May 2009. Retrieved 22 December 2009.
Helgason, Guðmundur. "Patrol of U-boat U-70 from 20 February 1941 to 7 March 1941". German U-boats of WWII – uboat.net. Archived from the original on 21 November 2008. Retrieved 22 December 2009.
Helgason, Guðmundur. "Göteborg (Steam merchant)". German U-boats of WWII – uboat.net. Archived from the original on 12 June 2010. Retrieved 22 December 2009.
Helgason, Guðmundur. "Convoy OB-293". German U-boats of WWII – uboat.net. Archived from the original on 11 April 2021. Retrieved 22 December 2009.
Helgason, Guðmundur. "Athelbeach (Motor tanker)". German U-boats of WWII – uboat.net. Archived from the original on 2 February 2016. Retrieved 22 December 2009.
Helgason, Guðmundur. "Delilian (Steam merchant)". German U-boats of WWII – uboat.net. Archived from the original on 2 February 2016. Retrieved 22 December 2009.
Helgason, Guðmundur. "Mijdrecht (Motor tanker)". German U-boats of WWII – uboat.net. Archived from the original on 12 June 2010. Retrieved 22 December 2009.
Helgason, Guðmundur. "Ships hit by U-70". German U-boats of WWII – uboat.net. Archived from the original on 5 September 2008. Retrieved 25 November 2012.