H.N. · H Nicolai · Nicolai Hartmann
| title | ISBN-13 | year of publication |
|---|---|---|
| Ethics: Volume I: 1 | 978-1-138-87083-3 | 2015 |
| Ethics: Volume II: 2 | 978-1-138-87084-0 | 2015 |
| Ethics: Volume III: 3 | 978-1-138-87085-7 | 2015 |
| Zarys metafizyki poznania | 978-83-7388-156-3 | 2007 |