Isaac Asimov's Science Fiction Magazine, Volume 5, Issue 7, July 6, 1981 by George H. Scithers, Sharon Webb, Grendel Briarton, Reginald Bretnor, Penny Tegen, F. Gwynplaine MacIntyre, Isaac Asimov, Baird Searle, Erwin S. Strauss, Avram Davidson, J.O. Jeppson, Janet Asimov, Gregory Benford, Martin Gardner, Tony Richards, Lowell Kent Smith, Elizabeth Anne Hull, Frederik Pohl