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- Quartz 3
- quartz 2
- Queluzite 1
- química 1
- Química Física 1
- Química inorgânica 1
- r codes 2
- R. Duffield 1
- radiação gama 1
- Radiation 1
- Radiation accidents 1
- radiation accidents 1
- Radiation detectors 1
- radiation detectors 2
- Radiation doses 6
- radiation doses 16
- Radiation effects 1
- Radiation monitoring 4
- radiation monitoring 6
- radiation portection 1