Refine My Results

Creation Date 

1. Before 1959  (3,198)
2. 1959 To 1973  (5,190)
3. 1974 To 1988  (23,736)
4. 1989 To 2004  (32,922)
5. After 2004  (66,767)
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Subject 

1. Chemistry  (125,636)
2. Metallurgy  (125,636)
3. Treatment Of Water, Waste Water, Sewage, Or Sludge  (125,565)
4. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (117,193)
5. Climate Change Mitigation Technologies Related To Wastewatertreatment Or Waste Management  (93,386)
6. Transporting  (39,895)
7. Performing Operations  (39,895)
8. Physical Or Chemical Processes Or Apparatus In General  (33,895)
9. Separation  (21,611)
10. Technical Subjects Covered By Former Uspc  (19,596)
11. Technologies For Adaptation To Climate Change  (16,462)
12. Fixed Constructions  (13,332)
13. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (10,800)
14. Lighting  (10,007)
15. Blasting  (10,007)
16. Heating  (10,007)
17. Mechanical Engineering  (10,007)
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Language 

1. English  (117,121)
2. Chinese  (28,731)
3. French  (13,384)
4. German  (10,971)
5. Korean  (4,405)
6. Japanese  (2,330)
7. Russian  (2,047)
8. Spanish  (1,470)
9. Portuguese  (747)
10. Swedish  (686)
11. Dutch  (547)
12. Finnish  (403)
13. Italian  (342)
14. Danish  (333)
15. Polish  (281)
16. Czech  (255)
17. Norwegian  (185)
18. Ukrainian  (185)
19. Romanian  (127)
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