ACE SCIENCE-FICTION BOOKS
D-449 THE GENETIC GENERAL by Gordon R. d.i.c.kson and TIME TO TELEPORT by Gordon R. d.i.c.kson
D-453 THE GAMES OF NEITH by Margaret St. Clair and THE EARTH G.o.dS 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. d.i.c.k and THE SKYNAPPERS by John Brunner
D-461 THE TIME TRADERS by Andre Norton
D-465 THE MARTIAN MISSILE by David Grinnell and THE ATLANTIC ABOMINATION by John Brunner
D-468 SENTINELS OF s.p.a.cE by Eric Frank Russell
D-471 SANCTUARY IN THE SKY by John Brunner and THE SECRET MARTIANS by Jack Sharkey
D-473 THE GREATEST ADVENTURE by John Taine
D-479 TO THE TOMBAUGH STATION by Wilson Tucker and EARTHMAN GO HOME by Poul Anderson
D-482 THE WEAPON SHOPS OF ISHER by A. E. Van Vogt