Sport in unserer Welt ― Chancen und ProblemeOmmo Grupe, Dietrich Kurz, Johannes M. Teipel, H. Baitsch, H.-E Bock, M. Bolte, W. Bokler, H.-W Heidland, F. Lotz · First published 2014Open the Tome
Sport in the Modern World -- Chances and ProblemsO. Grupe, Ommo Grupe, Dietrich Kurz, H. Baitsch, Johannes M. Teipel · First published 1974Open the Tome
