الغواصة الألمانية فئة يو 66 (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "الغواصة الألمانية فئة يو 66" in Arabic language version.

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uboat.net

Helgason, Guðmundur. WWI U-boats: U 66, WWI U-boats: U 67, WWI U-boats: U 68, WWI U-boats: U 69, WWI U-boats: U 70. U-Boat War in World War I. Uboat.net. Retrieved on 6 December 2008. نسخة محفوظة 15 مايو 2016 على موقع واي باك مشين.
Helgason، Guðmundur. "WWI U-boats: U 67". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. اطلع عليه بتاريخ 2008-12-05.
Helgason، Guðmundur. "Ships hit by U 67". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. اطلع عليه بتاريخ 2008-12-06.
Helgason، Guðmundur. "WWI U-boats: U 68". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. اطلع عليه بتاريخ 2008-12-05.
Helgason، Guðmundur. "Ships hit by U 68". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. اطلع عليه بتاريخ 2008-12-06.

Helgason, Guðmundur. WWI U-boats: U 66, WWI U-boats: U 67, WWI U-boats: U 68, WWI U-boats: U 69, WWI U-boats: U 70. U-Boat War in World War I. Uboat.net. Retrieved on 6 December 2008. نسخة محفوظة 15 مايو 2016 على موقع واي باك مشين.