Leiber The Swords of Lankhmar 79431 SF Andre Norton The Stars Are Ours! 79791 SF Edgar Rice Burroughs Tanar of Pellucidar 79797 SF Edgar Rice Burroughs Tanar of Pellucidar 79854 SF Edgar Rice Burroughs Tarzan at the Earth's Core 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 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 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 (October 1969) 81277 SF Spider Robinson Time Travelers Strictly Cash (1981) 81656 SF Bob Shaw Tomorrow Lies in Ambush 81670 SF Mack Reynolds Tomorrow Might Be Different 81900 SF Thomas Burnett Swann The Tournament of Thorns 81973 SF E. C. Tubb Toyman: Dumarest of Terra#3 82210 SF John Brunner The Traveler in Black 82355 SF Andre Norton Trey of Swords (1978) 82660 SF Robert A. Heinlein Tunnel in the Sky 84000 SF Andre Norton Uncharted Stars 84292 SF H. Beam Piper Uller Uprising 84331 SF John W. Campbell The Ultimate Weapon 84514 SF Andrew Offutt The Undying Wizard 84569 SF Axel Madsen Unisave 84581 SF A. E. van Vogt The Universe Maker 85456 SF Alan E. Nourse The Universe Between (1987) 86050 SF Philip K. Dick The Variable Man and Other Stories (1976) 86064 SF Fred Saberhagen The Veils of Azlaroc 86065 SF Fred Saberhagen The Veils of Azlaroc 86180 SF E. C. Tubb Veruchia 86181 SF E. C. Tubb Veruchia: Dumarest of Terra#8 (1982) 86190 SF Ian Watson Very Slow Time Machine 86607 SF Mark Adlard Volteface (1972) 86608 SF Philip K. Dick Vulcan's Hammer (1972) 86610 SF Andre Norton, Wojciech Siudmak, and Alicia Austin Voorloper