SF Fritz Leiber The Swords of Lankhmar 79431 SF Andre Norton The Stars Are Ours 79601 WE Roger Spellman Tall for a Texan / Big Man from the Brazos (1965) 79791 SF Edgar Rice Burroughs Tanar of Pellucidar 79797 SF Edgar Rice Burroughs Tanar of Pellucidar 79805 NA Roy Manning Tangled Trail 79854 SF Edgar Rice Burroughs Tarzan at the Earth's Core 79970 NA Isobel Lambot A Taste of Murder 79975 SF E. C. Tubb Technos / E. C. Tubb A Scatter of Stardus (March 1972) 80010 SF William Shatner Teklords 80011 SF William Shatner Teklab 80012 SF William Shatner Tekvengeance 80180 SF James Tiptree, Jr. Ten Thousand Light-Years from Home 80208 SF William Shatner Tekwar 80400 WE Nelson Nye The Texas Gun 80575 WE Nelson Nye Thief River 80661 NA Mildred Davis The Third Half 80680 SF Robert Lory The Thirteen Bracelets 80691 SF Roger Zelazny This Immortal 80705 SF Robert E. Howard Tigers of the Sea 80780 SF Robert E. Howard Three-Bladed Doom (1979) 80801 SF Andre Norton Three Against the Witch World 80805 SF Andre Norton Three Against the Witch World (1978) 80855 SF Alexei Panshin The Thurb Revolution (1978) 80933 SF Spider Robinson Time Pressure (1988) 81000 SF Clifford D. Simak Time & Again 81001 SF Clifford D. Simak Time & Again 81012 SF Keith Laumer The Time Bender 81125 SF Robert A. Heinlein Time for the Stars 81126 SF Robert A. Heinlein Time for the Stars 81237 SF Gordon R. Dickson Time to Teleport / Delusion World 81251 SF Andre Norton The Time Traders 81253 SF Andre Norton The Time Traders 81254 SF Andre Norton The Time Traders (1984) 81270 SF John Brunner Times Without Number (1969) 81277 SF Spider Robinson Time Travelers Strictly Cash (1981) 81610 SF Donald A. Wollheim (as David Grinnell) To Venus! To Venus! / E. C. Tubb The Jester at Scar (March 1970) 81656 SF Bob Shaw Tomorrow Lies in Ambush 81670 SF Mack Reynolds Tomorrow Might Be Different 81680 SF John Jakes Tonight We Steal the Stars / Laurence M. Janifer and S. J. Treibich The Wagered World (July 1969) 81861 WE Merle Constiner Guns at Q Cross / Tom West The Toughest Town in the Territory 81900 SF Thomas Burnett Swann The Tournament of Thorns 81973 SF E. C. Tubb Toyman: Dumarest of Terra#3 82101 WE Brian Garfield Trail Drive / Louis Trimble Trouble at Gunsight (1964) 82190