Subject
- Jet Propulsion Laboratory (U.S.)4
- Laboratories--Equipment and supplies4
- Light amplifiers4
- Los Angeles County General Hospital4
- Memorial service4
- Motion pictures4
- National security4
- Newborn infants--Medical care4
- Patents4
- Phonocardiography4
- Pins and needles4
- Pressure gages4
- Public relations4
- Respiration4
- Salinity--Measurement4
- Samplers4
- Scientific apparatus and instruments--Maintenance and repair4
- Scientists in motion pictures4
- Silver films (Metal coating)4
- Silvering4