SF Mack Reynolds Day After Tomorrow 13972 SF Brian M. Stableford Days of Wrath 13994 SF Andre Norton Daybreak - 2250 A. D. 14000 SF Brian M. Stableford The Days of Glory 14215 SF Greg Benford Deeper Than the Darkness 14235 SF Andre Norton The Defiant Agents (1978) 14236 SF Andre Norton The Defiant Agents 14244 SF James Schmitz The Demon Breed (1979) 14249 SF Andre Norton The Defiant Agents 14250 SF Mack Reynolds Depression Or Bust! and Dawnman's Planet 14251 SF Poul Anderson, Mildred Downey Broxon, Michael Whelan, and Alicia Austin The Demon of Scattery (1979) 14277 SF James Baen (ed.) Destinies Vol. 1, No. 3 (April - June, 1979) 14879 SF Tim Powers Dinner at Deviants Palace 14903 SF Frank Herbert Direct Descent 15238 SF George Warren Dominant Species 15670 SF Philip K. Dick Dr. Bloodmoney, Or How We Got Along After the Bomb (1976) 15697 SF Philip K. Dick The Unteleported Man (1972) 16600 SF Fred Saberhagen The Dracula Tape (1972) 16647 SF Andre Norton Dragon Magic 16648 SF Jack Vance The Dragon Masters 16651 SF Jack Vance The Dragon Masters 16668 SF John Brunner The Dramaturges of Yan 16669 SF Andre Norton Dread Companion (1970) 16670 SF Andre Norton Dread Companion (1970) 16701 SF Roger Zelazny The Dream Master 16728 SF Larry Niven and Steven Barnes Dream Park (1983) 17239 SF Ben Bova The Dueling Machine 17625 SF Frank Herbert Dune 18630 SF Gordon Eklund The Eclipse of Dawn (1970) 18770 SF Edgar Rice Burroughs Master of Adventure (1968) 19681 SF Samuel R. Delany The Einstein Intersection 19710 SF Bob Shaw A Wreath of Stars 20275 SF Alan Garner Elidor 20563 SF Fred Saberhagen Empire of the East 20565 SF Barrington J. Bayley Empire of Two Worlds 20571 SF Samuel R. Delany The Ballad of Beta-2 and Empire Star 20664 SF Jerry Pournelle Endless Frontier, Volume I 20670 SF Judith Merril (ed.) England Swings Sf: Stories of Speculative Fiction 20724 SF Poul Anderson Ensign Flandry 20730 SF Keith Laumer Envoy To New Worlds 21560 SF Edgar Rice Burroughs Escape on Venus (1969) 21561 SF Edgar Rice Burroughs Escape on Venus (1969) 21562 SF Edgar Rice Burroughs Escape on Venus 21567 SF Edgar Rice Burroughs Escape on Venus 21590 SF James White The Escape Orbit (1983) 21599 SF Christopher Stasheff Escape Velocity 21801 SF Edgar Rice Burroughs The Eternal Savage (July 1969) 21803 SF Edgar Rice Burroughs