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Creation Date 

1. Before 1950  (2)
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Subject 

1. Chemistry  (10)
2. Metallurgy  (10)
3. Nuclear Engineering  (6)
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5. Nuclear Physics  (6)
6. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (5)
7. Protection Against X-Radiation, Gamma Radiation, Corpuscularradiation Or Particle Bombardment  (5)
8. Treating Radioactively Contaminated Material  (5)
9. Decontamination Arrangements Therefor  (5)
10. Transporting  (4)
11. Performing Operations  (4)
12. Organic Fertilisers Not Covered By Subclasses C05b, C05c, E.G. Fertilisers From Waste Or Refuse  (4)
13. Manufacture Thereof  (4)
14. Nuclear Reactors  (4)
15. Fertilisers  (4)
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