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Creation Date 

1. Before 1962  (10)
2. 1962 To 1964  (29)
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New Records 

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Subject 

1. Electricity  (127)
2. Basic Electric Elements  (116)
3. Compositions Based Thereon  (78)
4. Their Preparation Or Chemical Working-Up  (78)
5. Organic Macromolecular Compounds  (78)
6. Selection Of Materials For Their Conductive, Insulating Ordielectric Properties  (49)
7. Cables  (49)
8. Conductors  (49)
9. Insulators  (49)
10. Semiconductor Devices  (45)
11. Electric Solid State Devices Not Otherwise Provided For  (45)
12. Refractories  (35)
13. Compositions Thereof, E.G. Mortars, Concrete Or Like Buildingmaterials  (35)
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