11. Simpson and Harrison are associated with the invention of
12. Cholera Bascillus was invented by
13. Cinematography was invented by
14. D.D.T. was invented by
15. Electrons were discovered by
16. Evolution Theory was discovered by
17. Fahrenheit Thermometer was discovered by
18. Fax machine was invented by
19. Thomas Alva Edison discovered
20. Helicopter was invented by
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