Nazi German extermination camp on the Ner River, a tributary of the Warta, in western Poland. It opened in December 1941 and closed in January 1945 ... Found on http://www.britannica.com/eb/a-z/c/62
In World War II, site of the first German extermination camp, about 50 km/31 mi northeast of Bydgoszcz in western Poland. A total of about 350,000 Jews and gypsies were killed at the camp before it... Found on http://www.encyclo.co.uk/local/20688