K.P. · K S · Karl Popper · S. P.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Open Society and Its Enemies | 978-1-138-12680-0 (1-138-12680-2) | 2015 |
| The World of Parmenides: Essays on the Presocratic Enlightenment | 978-1-138-14300-5 (1-138-14300-6) | 2016 |