with contributions by Stefanie Heckmann...[et al. with contributions by Susanne Altmann...[et al. with contributions by Stephanie Barron...[et al. with contributions by Verena Borgmann...[et al. with contributions by Avis Berman ...[et al. with contributions by Jim Heimann ...[et al. with contributions by Maria Becker...[et al. with contributions by Naomi Speakman...[et al. with contributions by Oskar Bätschmann...[et al. with contributions by Glenn Adamson...[et al.