- Author: MARCUSE HERBERT POPPER KARL
- Language: Greek
- Year: 2005
- Author: Popper Karl R.
- Language: Norwegian
- Year: 1981
- Author: Popper Karl
- Language: Spanish
- Year: 1999
- Author: POPPER Karl
- Language: Portuguese
- Year: 1980
- Author: Popper Karl, Camiller Patrick(Translator)
- Language: English
- Year: 2001
- Author: Popper Karl Raimund
- Language: English
- Year: 2010
- Author: Marcuse Herbert, Popper Karl Raimund, Sartre Jean Paul
- Language: English
- Year: 1973
- Author: Popper Karl
- Language: Spanish
- Author: Suárez-Iñiguez Enrique, Popper Karl Raimund
- Language: English
- Year: 2007