Subject
- Employees2
- Extrusion process1
- Faraday, Michael, 1791-18671
- Franklin Institute (Philadelphia, Pa.)1
- Frontispiece1
- Industries1
- Laboratories1
- Lea, M. Carey (Mathew Carey), 1823-18972
- Machinery1
- Mechanical chemistry2
- Metal clusters2
- Metallurgy1
- Metals1
- Milling-machines--Vibration1
- Mineral industries1
- Pestles1
- Photochemistry2
- Photographic chemistry2
- Photography--Printing processes--Silver2
- Plastics1