The Nazis established six extermination camps on Polish soil. These were Chelmno<span> (</span>December 1941-January 1945), Belzec (March-December 1942), Sobibor (May-July 1942<span> and </span>October 1942-October 1943), Treblinka (July 1942-August 1943), Majdanek (September 1941-July 1944) and Auschwitz-Birkenau (March 1942-January 1945<span>) ...</span>
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I could be very wrong, but i think Kansas State Uni.
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