Subject
- Hydraulic presses3
- Laboratories14
- Latex1
- Lubrication and lubricants1
- Machinery35
- Materials science5
- Metallography1
- Metals--Cold working1
- Microscopes2
- Microscopy2
- Naval Air Development Center1
- Naval Air Engineering Center (U.S.)20
- Naval Research Laboratory (U.S.)46
- Plastics1
- Plastics--Molds2
- Polymers4
- Portraits, Group3
- Primers (Coating)1
- Pyrometers1
- Quality control9