![book UFO's - A Scientific Debate](/covers/files_170/3104000/026e20cf70fd074b3fe7e270ec996707-g.jpg)
- Author: Carl Sagan Thornton Page (editors)
- Language: English
- Year: 1972
![book Milliárdok és milliárdok](/covers/files_170/3103000/b421864a6549c52df39eee674b040ac2-g.jpg)
- Author: Carl Sagan
- Language: Hungarian
- Year: 2000
![book Milliárdok és milliárdok](/covers/files_170/3094000/570c73ad1afca807729518424d9f79be-g.jpg)
- Author: Carl Sagan
- Language: Hungarian
- Year: 2000
![book Az éden sárkányai](/covers/files_170/3094000/20e4c4d99e0bbe9b0559e12fc535294a-g.jpg)
- Author: Carl Sagan
- Language: Hungarian
- Year: 1995
![book Milliárdok és milliárdok](/covers/files_170/nocover.jpg)
- Author: Carl Sagan
- Language: Hungarian
- Year: 2000
![book Il mondo infestato dai demoni. La scienza e il nuovo oscurantismo](/covers/files_170/3035000/0421d18ba6d4cd438cc3d0f7dc7a0055-g.jpg)
- Author: Carl Sagan
- Language: Italian
- Year: 2001
![book Sombras de antepasados olvidados](/covers/files_170/3007000/b3b325e2513b526349b479940be80a5b-g.jpg)
- Author: Carl Sagan Ann Druyan
- Language: Spanish
- Year: 1992
![book La conexión cósmica](/covers/files_170/3005000/9dadd5a87ec6031bed38bf220eea63cf-g.jpg)
La conexión cósmica
epub
- Author: Carl Sagan
- Language: Spanish
![book UFOs: A Scientific Debate](/covers/files_170/3002000/02945968536a87fec6ff04807616257c-g.jpg)
- Author: Thornton Page, Carl Sagan
- Language: English
- Year: 1974
![book Cosmos](/covers/files_170/3002000/b90e3a0a6901423ebaa2cb0cf6c7080b-g.jpg)
Cosmos
epub
- Author: Carl Sagan
- Language: Spanish
- Year: 1980