Rudolf L. Schreiber,...[et al. Rudolf L. Schreiber,...[et al.] Rudolf Arnheim,...[et al. Rolf Eschenburg...,[et al. Rudolf Arnheim,...[et al.] Andrew B. Crider,...[et al. Rudolf B.Schlesinger [et al. Rudolf Stich...[et al. Charles F. Turner,...[et al. H. Schirmer,...[et al.