Subject
- Phosphoric acid industry5
- Remote handling (Radioactive substances)5
- Women employees5
- Engines4
- Exhibitions4
- Fertilizers4
- Geiger-Müller counters4
- Phosphates4
- Fox, E.J.3
- Portraits3
- Science--Experiments3
- Tubes--Testing3
- Women in science3
- X-rays3
- X-rays--Industrial applications3
- Agricultural exhibitions2
- Autoclaves2
- Bardwell, D.C.2
- Barges2
- Black, C.A.2