This contains: The War Is Over by Algis Budrys; The Light by Poul Anderson; Compassion Circuit by John Wyndham; Volpla by Wyman Guin; Silence Please by Arthur C. Clarke; Allegory by William T. Powers; Soap Opera by Alan Nelson; The Analogues by Damon Knight; The Machine by Richard Gehman; Technological Retreat by G. C. Edmondson; Shipping Clerk by William Morrison; The Skills of Xanadu by Theodore Sturgeon; and The Available Data on the Worp Reaction by Lion Miller.
Used availability for Groff Conklin's 13 Great Stories of Science Fiction
July 1979 : USA Mass Market Paperback
August 1972 : UK Paperback
1972 : UK Paperback