Edited by Alan J. Bearden. Edited by Glenn F. Harvey. Edited by Alfred M. Freudenthal. Edited by Allen M. Alper. Edited by Alan A. Rubin. Edited by Denis J. Carr. Edited by A. M. Macdonald. Edited by M. F. Lappert. Edited by Alex. E. Javitz. Edited by A. H. Chaplin.