German submarine U-147 (1940) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "German submarine U-147 (1940)" in English language version.

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uboat.net

Helgason, Guðmundur. "The Type IID boat U-147". German U-boats of WWII - uboat.net. Retrieved 31 July 2011.
Helgason, Guðmundur. "War Patrols by German U-boat U-147". German U-boats of WWII - uboat.net. Retrieved 31 July 2011.
Helgason, Guðmundur. "Ships hit by U-147". German U-boats of WWII - uboat.net. Retrieved 31 July 2011.