Subject
- Electromagnetism3
- Explosives industry3
- Faraday, Michael, 1791-18673
- Flavor3
- Gunpowder3
- Gunpowder industry3
- Hercules Powder Company3
- Industries3
- Insect pests3
- Laboratories3
- Medicinal plants3
- Mendeleyev, Dmitry Ivanovich, 1834-19073
- Metallurgy3
- Metals3
- Microscopy3
- Naturalists3
- Nursing3
- Paint3
- Pasteur, Louis, 1822-18953
- Pharmacology3