Total number of records: 1
Count of Subject
| Subject | Count |
|---|
| geology | 1 |
| mines and mineral resources | 1 |
Count of People and organisations
| People and organisations | Count |
|---|
| Aldrich, Henry Ray | 1 |
| Aldrich, Henry Ray (1891-) | 1 |
| Bean, Ernest F | 1 |
| Bean, Ernest F (1882-) | 1 |
| Hotchkiss, William Otis (1878-1954) | 1 |
