The Operating Engineers the economic history of a trade union
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr | 
| Iaith: | English | 
| Cyhoeddwyd: | Cambridge
          Harvard University Press
    
        1964. | 
| Cyfres: | Wertheim publications in industrial relations | 
| Pynciau: |