Statistical abstract of the world
| Awduron Eraill: | |
|---|---|
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Detroit
          Gale Research
    
        c1997 | 
| Rhifyn: | 3rd ed. | 
| Pynciau: | 
| Awduron Eraill: | |
|---|---|
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Detroit
          Gale Research
    
        c1997 | 
| Rhifyn: | 3rd ed. | 
| Pynciau: |