Philosophy of mathematics and natural science.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Princeton
Princeton University Press
1949
|
| Rhifyn: | Rev. and augm. English ed., based on a translation of Olaf Helmer. |
| Pynciau: |