edited by Robert S. Peterkin ... [et al.]. edited by Robert S. Peterkin ... [et al. edited by Robert Klanten ... [et al.] edited by Robert D. Felner,...[et al.] edited by Robert Klanten ... [et al. edited by Robert Klanten ...[et al.] edited by Robert Klanten...[et al.] edited by A. E. Astin ... [et al.]. edited by Marc Fetscherin ... [et al.]. edited by Robert D. Felner,...[et al.