Scientific research II
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Berlin, New York
          Springer-Verlag
    
        1967. | 
| Cyfres: | Studies in the foundations, methodology, and philosophy of science
              v.3 | 
| Pynciau: |