Subject
- Nitrocellulose--Analysis1
- Nitrocellulose--Research1
- Packaging1
- Paint industry and trade2
- Palen, Charles1
- Palen, Robert1
- Paper Makers Chemical Corporation2
- Paper chemicals1
- Paper chemicals industry6
- Paper industry1
- Pentaerythritol tetranitrate2
- Photoelectric measurements1
- Pine oil1
- Plastics6
- Plastics industry and trade3
- Plastics--Extrusion2
- Plastics--Molding2
- Plastics--Testing4
- Polyethers5
- Polymerization1