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Subject
- Chemical industry265
- Corporations265
- Hercules Incorporated256
- Employees129
- Explosives112
- Advertising, Industrial103
- Advertising102
- Machinery88
- Trade shows80
- Cellulose69
- Propellants60
- Explosives industry57
- Detonators54
- Scientific apparatus and instruments40
- Women employees33
- Research, Industrial24
- Cotton19
- Ethylcellulose14
- Naval stores industry14
- World War (1939-1945)14