Struwe, Friedrich [P:(DE-HGF)0] ; Meyer, Richard Josef [P:(DE-HGF)0] ; Peters, Franz [P:(DE-HGF)0] ; Gmelin, Leopold [P:(DE-HGF)0] ; Pietsch, Ernst H. E. [P:(DE-HGF)0] ; Buschbeck, Karl-Christian [P:(DE-HGF)0] ; Becke-Goehring, Margot [P:(DE-HGF)0]