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Assunto 

1. Earth Resources And Remote Sensing  (84)
2. Meteorology And Climatology  (66)
3. Spacecraft Propulsion And Power  (53)
4. Air Transportation And Safety  (49)
5. Aerospace Medicine  (35)
6. Lunar And Planetary Science And Exploration  (31)
7. Geosciences  (30)
8. Man/system Technology And Life Support  (26)
9. Instrumentation And Photography  (23)
10. Aerodynamics  (23)
11. Aeronautics  (23)
12. Space Communications, Spacecraft Communications, Command And Tracking  (21)
13. Metals And Metallic Materials  (18)
14. Communications And Radar  (17)
15. Spacecraft Design, Testing And Performance  (17)
16. Computer Programming And Software  (16)
17. Composite Materials  (16)
18. Electronics And Electrical Engineering  (16)
19. Geophysics  (14)
20. Aircraft Design, Testing And Performance  (13)
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1. Antes de2008  (16)
2. 2008Até2011  (59)
3. 2012Até2015  (149)
4. 2016Até2020  (204)
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