Coal; its properties, analysis, classification, geology, extraction, uses and distribution
| Hovedforfatter: | |
|---|---|
| Format: | Bog | 
| Sprog: | English | 
| Udgivet: | New York
          John Wiley & sons
    
        1940. | 
| Udgivelse: | 2nd ed. | 
| Fag: | 
| Hovedforfatter: | |
|---|---|
| Format: | Bog | 
| Sprog: | English | 
| Udgivet: | New York
          John Wiley & sons
    
        1940. | 
| Udgivelse: | 2nd ed. | 
| Fag: |