- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1976
- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1980
- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1980
- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1980
- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1980
- Author: P. T. Geach Peter Thomas Geach
- Language: English
- Year: 1980