The Jasenovac reference article from the English Wikipedia on 24-Apr-2004
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Jasenovac

Jasenovac is a municipality in Central Croatia, in the southern part of the Sisak-Moslavina county near the confluence of the river Una into Sava. The population was 2,391 in 2001.

It's most (in)famous for naming the Jasenovac complex of WWII concentration camps.