Karl Koeber ... [et al] ; editors, Helga Demmer ...[et al.]. L. J. Boucher ...[et al.]; editors, Helga Demmer ...[et al.]. Helga Demmer ...[et al.] ; editor, Helga Demmer ...[et al.]. Jean-Claude Maire ... [et al]; editor, Helga Demmer ... [et al]. L. J. Boucher, Kart Koeber ; editors, Helga Demmer ...[et al.]. Dieter Koschel ...[et al.] ; editors, Dieter Koschel ...[et al.]. Vera Haase ... [et al]; editor, Hartmut Katscher ... [et al]. Susanne Jager ...[et al.] ; editor, Dieter Koschel ...[et al.]. Siegfried H. Eberle ... [et al]; editor, Hans Karl Kugler ... [et al]. Susanne Jager ...[et al.] ; editor, Peter Kuhn ...[et al.].