Ten years later in 1969 , shortly before he retired , the Humboldt made him a full professor .
That same year he was given a teaching professorship in modern German and Scandinavian Literature at the Germanistics Institute of the Berlin 's Humboldt University .
Ten years later in 1969 , shortly before he retired , the Humboldt University made him a full professor .
That same year he was given a teaching professorship in modern German and Scandinavian Literature at the Germanistics Institute of the Berlin 's Humboldt University .