D-449 THE GENETIC GENERAL by Gordon R. Dickson
and TIME TO TELEPORT by Gordon R. Dickson
D-453 THE GAMES OF NEITH by Margaret St. Clair
and THE EARTH GODS ARE COMING
by Kenneth Bulmer
D-455 THE BEST FROM FANTASY AND SCIENCE-FICTION
Fourth Series, edited by Anthony Boucher.
D-457 VULCAN'S HAMMER by Philip K. Dick
and THE SKYNAPPERS by John Brunner