Total number of records: 3
Count of Subject
| Subject | Count |
|---|
| chemical warfare | 3 |
| world war, 1914-1918 | 2 |
| gases, asphyxiating and poisonous | 2 |
Count of People and organisations
| People and organisations | Count |
|---|
| Lefebure, Victor | 1 |
| Interessengemeinschaft Der Deutschen Teerfarbenfabriken | 1 |
| Heller, Charles E (1943-) | 1 |
| Hanslian, Rudolf (1883-) | 1 |
