Original: The district in its present form was established on July 1 , 1972 by merging the former districts of Melle , Bersenbrück and Wittlage , and most of the old district of Osnabrück .
Simplified: The district was established in 1972 by merging four old districts ( Osnabrück , Melle , Bersenbrück , Wittlage ) .