The Gällsta Runestones from the 11th century commemorate four generations of the same family in Viking Age Sweden.
New!!: U-231 and Gällsta Runestones ·
German submarine U-231 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
New!!: U-231 and German submarine U-231 ·
Uranium (U) is a naturally occurring radioactive element that has no stable isotopes but two primordial isotopes (uranium-238 and uranium-235) that have long half-life and are found in appreciable quantity in the Earth's crust, along with the decay product uranium-234.
New!!: U-231 and Isotopes of uranium ·