Books by Paul, Frank R. (Frank Rudolph) (sorted by popularity)
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Cities in the air
Edmond Hamilton
181 downloads
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In Caverns Below
Stanton A. Coblentz
180 downloads
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Through the crater's rim
A. Hyatt Verrill
176 downloads
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The Star-Master
Ray Cummings
170 downloads
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The terrors of the upper air
Frank Orndorff
169 downloads
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The Flame Breathers
Ray Cummings
156 downloads
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Invaders of the Forbidden Moon
Raymond Z. Gallun
155 downloads
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Ice Planet
Carl Selwyn
146 downloads
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Cosmic Castaway
Carl Jacobi
145 downloads
