Norbert Wohlfahrt...[et al.] Norbert Wohlfahrt...[et al. Herbert Puchta ...[et al.] Robert Franek...[et al.] Robert Woods ... [et al.] Herbert Puchta ...[et al. Albert M. Craig,...[et al.] Herbert A. Raffaele...[et al.] Herbert H. Gross,...[et al.] Hubert Krains...[et al.]