Theory of valuation
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua | 
| Argitaratua: | Chicago, Ill.
          University of Chicago Press
    
        c1939. | 
| Saila: | International Encyclopedia of Unified Science
              v. 2, no. 4 | 
| Gaiak: | 
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua | 
| Argitaratua: | Chicago, Ill.
          University of Chicago Press
    
        c1939. | 
| Saila: | International Encyclopedia of Unified Science
              v. 2, no. 4 | 
| Gaiak: |