Adolf Piening (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Adolf Piening" in English language version.

refsWebsite

Global rank English rank

2,553^rd place

1,888^th place

1^st place

uboat.net

Helgason, Guðmundur. "Korvettenkapitän Adolf Cornelius Piening". German U-boats of WWII - uboat.net. Retrieved 18 March 2012.
Helgason, Guðmundur. "Patrols by U-48". German U-boats of WWII - uboat.net. Retrieved 18 March 2012.
Helgason, Guðmundur. "The Type IXC boat U-155". German U-boats of WWII - uboat.net. Archived from the original on 2010-11-25. Retrieved 18 March 2012.
Helgason, Guðmundur. "Patrol of German U-boat U-155 from 7 February 1942 to 27 March 1942". German U-boats of WWII - uboat.net. Retrieved 18 March 2012.
Helgason, Guðmundur. "War Patrols by German U-boat U-155". German U-boats of WWII - uboat.net. Retrieved 18 March 2012.
Helgason, Guðmundur. "The Piening-Route". German U-boats of WWII - uboat.net. Retrieved 18 April 2010.

Helgason, Guðmundur. "The Type IXC boat U-155". German U-boats of WWII - uboat.net. Archived from the original on 2010-11-25. Retrieved 18 March 2012.