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Creation Date 

1. Before 1999  (1)
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Subject 

1. Telephonic Communication  (5)
2. Calculating  (5)
3. Computing  (5)
4. Physics  (5)
5. Counting  (5)
6. Image Data Processing Or Generation, In General  (2)
7. Hygiene  (2)
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9. Diagnosis  (2)
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11. Wireless Communications Networks  (2)
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14. Testing  (2)
15. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (2)
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Language 

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