- Author: Charles W. Socarides, Emmanuel Carballo Villaseñor, Olga Aikin
- Language: Spanish
- Year: 1994
- Author: Nikolay Berdiaev, Nicolas Berdiaeff
- Language: Spanish
- Year: 1938
- Author: George D. Oprescu
- Language: Romanian, Moldavian, Moldovan
- Year: 1987
- Author: Ilie Mihăescu Sergiu Florică
- Language: Romanian
- Year: 1977
- Author: George D. Oprescu
- Language: Romanian, Moldavian, Moldovan
- Author: I. C. Boghiţoiu
- Language: Romanian, Moldavian, Moldovan
- Year: 1982
- Author: I. C. Boghiţoiu
- Language: Romanian, Moldavian, Moldovan
- Author: Mircea Constantin Munteanu
- Language: Romanian, Moldavian, Moldovan
- Year: 1990
HI-FI ABC
pdf
- Author: George D. Oprescu
- Language: Romanian, Moldavian, Moldovan
- Year: 1978