Refine My Results

Creation Date 

1. Before 1960  (886)
2. 1960 To 1975  (1,916)
3. 1976 To 1991  (7,637)
4. 1992 To 2008  (45,244)
5. After 2008  (163,841)
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New Records 

1. New From Last Week  (71)
2. New From Last Month  (5,244)
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Subject 

1. Transporting  (56,922)
2. Performing Operations  (56,922)
3. Physics  (48,568)
4. Chemistry  (47,357)
5. Metallurgy  (47,357)
6. Human Necessities  (36,114)
7. Calculating  (29,606)
8. Computing  (29,606)
9. Counting  (29,606)
10. Electricity  (25,916)
11. Lighting  (23,929)
12. Weapons  (23,929)
13. Blasting  (23,929)
14. Heating  (23,929)
15. Mechanical Engineering  (23,929)
16. Fixed Constructions  (20,958)
17. Physical Or Chemical Processes Or Apparatus In General  (14,363)
18. Hygiene  (12,998)
19. Medical Or Veterinary Science  (12,998)
20. Measuring  (11,268)
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Language 

1. English  (206,669)
2. Chinese  (111,215)
3. French  (25,733)
4. German  (13,314)
5. Korean  (4,836)
6. Spanish  (2,104)
7. Japanese  (1,610)
8. Portuguese  (1,513)
9. Russian  (1,351)
10. Italian  (463)
11. Danish  (425)
12. Polish  (369)
13. Swedish  (358)
14. Ukrainian  (329)
15. Norwegian  (268)
16. Dutch  (257)
17. Finnish  (228)
18. Hebrew  (111)
19. Hungarian  (105)
20. Czech  (95)
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