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Featured free ebooks — Science

Brain Twister by Mark Phillips (Randall Garrett and Laurence M. Janifer)
Brain Twister
Mark Phillips (Randall Garrett and Laurence M. Janifer)
The Atomic Bombings of Hiroshima & Nagasaki by US Army Corps of Engineers, Manhattan District
The Atomic Bombings of Hiroshima & Nagasaki
US Army Corps of Engineers, Manhattan District
Planet of the Damned by Harry Harrison
Planet of the Damned
Harry Harrison
Space Viking by H. Beam Piper
Space Viking
H. Beam Piper
The Interesting Narrative of the Life of Olaudah Equiano, Or Gustavus Vassa, The African by Olaudah Equiano
The Interesting Narrative of the Life of Olaudah Equiano, Or Gustavus Vassa, The African
Olaudah Equiano
Canyons of the Colorado, or The exploration of the Colorado River and its Canyons by John Wesley Powell
Canyons of the Colorado, or The exploration of the Colorado River and its Canyons
John Wesley Powell
Warlord of Kor by Terry Carr
Warlord of Kor
Terry Carr
This Crowded Earth by Robert Bloch
This Crowded Earth
Robert Bloch
The Autobiography of Charles Darwin by Charles Darwin
The Autobiography of Charles Darwin
Charles Darwin
The House on the Borderland by William Hope Hodgson
The House on the Borderland
William Hope Hodgson
The Last Man by Mary Wollstonecraft Shelley
The Last Man
Mary Wollstonecraft Shelley
A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery by Anonymous
A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery
Anonymous
The People that Time Forgot by Edgar Rice Burroughs
The People that Time Forgot
Edgar Rice Burroughs
Pellucidar by Edgar Rice Burroughs
Pellucidar
Edgar Rice Burroughs
The Food of the Gods and How it Came to Earth by H. G. Wells
The Food of the Gods and How it Came to Earth
H. G. Wells
Triplanetary by E.E. “Doc” Smith
Triplanetary
E.E. “Doc” Smith
Is Mars Habitable? by Alfred Russel Wallace
Is Mars Habitable?
Alfred Russel Wallace
Masters of Space by Edward Elmer Smith
Masters of Space
Edward Elmer Smith
Mutual Aid: A Factor of Evolution by Peter Kropotkin
Mutual Aid: A Factor of Evolution
Peter Kropotkin
Key Out of Time by Andre Norton
Key Out of Time
Andre Norton
The Spinster Book by Myrtle Reed
The Spinster Book
Myrtle Reed
The South Pole; an account of the Norwegian Antarctic expedition in the Fram, 1910-12 by Roald Amundsen
The South Pole; an account of the Norwegian Antarctic expedition in the Fram, 1910-12
Roald Amundsen
Ten Books on Architecture by Marcus Vitruvius Pollio
Ten Books on Architecture
Marcus Vitruvius Pollio
The Lost Continent by Edgar Rice Burroughs
The Lost Continent
Edgar Rice Burroughs
Omnilingual by H. Beam Piper
Omnilingual
H. Beam Piper
Operation Terror by Murray Leinster
Operation Terror
Murray Leinster
In Defense of Women by Henry L. Mencken
In Defense of Women
Henry L. Mencken
Familiar Letters on Chemistry by Justus Liebig
Familiar Letters on Chemistry
Justus Liebig
Space Tug by Murray Leinster
Space Tug
Murray Leinster
Space Prison by Tom Godwin
Space Prison
Tom Godwin
The Scarlet Plague by Jack London
The Scarlet Plague
Jack London
Wanted – 7 Fearless Engineers! by Warner Van Lorne
Wanted – 7 Fearless Engineers!
Warner Van Lorne
The Concept of Nature by Alfred North Whitehead
The Concept of Nature
Alfred North Whitehead
The Coming Race by Edward George Bulwer-Lytton
The Coming Race
Edward George Bulwer-Lytton
The Defiant Agents by Andre Norton
The Defiant Agents
Andre Norton
Eugenics and Other Evils by G. K. Chesterton
Eugenics and Other Evils
G. K. Chesterton
The Return by H. Beam Piper
The Return
H. Beam Piper
How to Tell the Birds from the Flowers by Robert Williams Wood
How to Tell the Birds from the Flowers
Robert Williams Wood
Greener Than You Think by Ward Moore
Greener Than You Think
Ward Moore
Hunters Out of Space by Joseph E. Kelleam
Hunters Out of Space
Joseph E. Kelleam
Uller Uprising by H. Beam Piper
Uller Uprising
H. Beam Piper
The World I Live In by Helen Keller
The World I Live In
Helen Keller
The Ethical Engineer by Harry Harrison
The Ethical Engineer
Harry Harrison
Celebrated Crimes by Alexandre Dumas
Celebrated Crimes
Alexandre Dumas
Science and Hypothesis by Henri Poincaré
Science and Hypothesis
Henri Poincaré
Four-Day Planet by H. Beam Piper
Four-Day Planet
H. Beam Piper
Out of Time's Abyss by Edgar Rice Burroughs
Out of Time's Abyss
Edgar Rice Burroughs
Rebels of the Red Planet by Charles L. Fontenay
Rebels of the Red Planet
Charles L. Fontenay
The Metal Monster by Abraham Merritt
The Metal Monster
Abraham Merritt
A Journey in Other Worlds: A Romance of the Future by John Jacob Astor IV
A Journey in Other Worlds: A Romance of the Future
John Jacob Astor IV
Sketches Of The Fair Sex by Anonymous
Sketches Of The Fair Sex
Anonymous
Works of Stanley G. Weinbaum - A Martian Odyssey by Stanley Grauman Weinbaum
Works of Stanley G. Weinbaum - A Martian Odyssey
Stanley Grauman Weinbaum
Greylorn by Keith Laumer
Greylorn
Keith Laumer
Oomphel in the Sky by H. Beam Piper
Oomphel in the Sky
H. Beam Piper
The Iron Heel by Jack London
The Iron Heel
Jack London
Storm Over Warlock by Andre Norton
Storm Over Warlock
Andre Norton
Starman's Quest by Robert Silverberg
Starman's Quest
Robert Silverberg
The Bird Study Book by Thomas Gilbert Pearson
The Bird Study Book
Thomas Gilbert Pearson
Edison's Conquest of Mars by Garrett P. Serviss
Edison's Conquest of Mars
Garrett P. Serviss
Lone Star Planet by H. Beam Piper and John J. McGuire
Lone Star Planet
H. Beam Piper and John J. McGuire

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