Refine My Results

Creation Date 

1. Before 1959  (229)
2. 1959 To 1973  (153)
3. 1974 To 1989  (4,689)
4. 1990 To 2005  (24,091)
5. After 2005  (64,191)
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Subject 

1. Physics  (34,347)
2. Electricity  (23,679)
3. Transporting  (21,758)
4. Performing Operations  (21,758)
5. Calculating  (20,160)
6. Computing  (20,160)
7. Counting  (20,160)
8. Human Necessities  (17,335)
9. Electric Communication Technique  (15,297)
10. Electric Digital Data Processing  (12,348)
11. Lighting  (10,854)
12. Weapons  (10,854)
13. Blasting  (10,854)
14. Heating  (10,854)
15. Mechanical Engineering  (10,854)
16. Hygiene  (10,233)
17. Medical Or Veterinary Science  (10,233)
18. Transmission Of Digital Information, E.G. Telegraphiccommunication  (8,362)
19. Measuring  (7,502)
20. Testing  (7,502)
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Language 

1. French  (78,802)
2. English  (77,796)
3. German  (10,072)
4. Chinese  (6,134)
5. Japanese  (3,031)
6. Korean  (1,131)
7. Spanish  (532)
8. Russian  (287)
9. Portuguese  (136)
10. Swedish  (131)
11. Finnish  (45)
12. Norwegian  (32)
13. Arabic  (29)
14. Danish  (29)
15. Dutch  (28)
16. Hebrew  (14)
17. Italian  (13)
18. Ukrainian  (11)
19. Polish  (9)
20. Hungarian  (4)
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