Query: 1951 science fiction novels
Relevant documents:
The Astronauts
Los Altísimos
Foundation (Asimov novel)
The Day of the Triffids
The Sands of Mars
The Gauntlet (novel)
The Puppet Masters
Time and Again (Simak novel)
Rogue Queen
Seeds of Life
Between Planets
Shadow Over Mars
Wine of the Dreamers
The Weapon Shops of Isher
Outpost Mars
Prelude to Space
The Continent Makers
Murder in Millennium VI