This author has not been identified. Look up 'Karl Jonas' in GoogleThis author has not been identified. Look up 'Helmut Jungblut' in GoogleThis author has not been identified. Look up 'Joachim Kaeber' in GoogleThis author has not been identified. Look up 'Manfred Kaul' in GoogleThis author has not been identified. Look up 'Ina Müller' in GoogleThis author has not been identified. Look up 'Horst Santo' in GoogleThis author has not been identified. Look up 'Josef Schäffer' in GoogleThis author has not been identified. Look up 'Ralf Wegner' in Google