A Yank at Valhalla

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Alien Earth

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Battle for the Stars

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Children of the Sun

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Citadel of the Star Lords

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Cities in the air

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City at World's End

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Crashing Suns

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Devolution

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Evans of the Earth-Guard

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Exile

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Last Call for Doomsday!

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Murder in the Void

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Outside the Universe

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Proxy Planeteers

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Requiem

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Sunfire!

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The abysmal invaders

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The Comet Drivers

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The comet-drivers

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The Cosmic Cloud

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The Cosmic Looters

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The Door into Infinity

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The invisible master

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The Legion of Lazarus

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The life-masters

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The Man Who Evolved

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The Man Who Saw the Future

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The Man With the Golden Eyes

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The Monster-God of Mamurth

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The Sargasso of Space

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The sea horror

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The Sinister Invasion

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The space visitors

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The Star Stealers

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The star-stealers

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The Stars, My Brothers

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The Three Planeteers

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The time-raider

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The universe wreckers

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The Valley of Creation

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The World with a Thousand Moons

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What's It Like Out There?

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Within the Nebula

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World atavism

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