| 1. | Glossary of botany | Wikipedia audio article | 3:35:56 | |
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| 2. | Iranian nuclear programme | Wikipedia audio article | 3:11:56 | |
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| 3. | Modern world | Wikipedia audio article | 2:43:36 | |
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| 4. | World Jewish Congress | Wikipedia audio article | 2:37:16 | |
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| 5. | World War II by country | Wikipedia audio article | 2:34:10 | |
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| 6. | Puerto Rico | Wikipedia audio article | 2:32:28 | |
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| 7. | Leo Spaceman | Wikipedia audio article | 2:31:40 | |
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| 8. | History of Africa | Wikipedia audio article | 2:29:37 | |
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| 9. | Christian theology | Wikipedia audio article | 2:26:37 | Vlog |
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| 10. | Eastern Orthodox Church | Wikipedia audio article | 2:23:13 | |
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| 11. | Islamic banking and finance | Wikipedia audio article | 2:18:50 | |
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| 12. | Lockheed Martin F-35 Lightning II | Wikipedia audio article | 2:16:46 | |
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| 13. | Søren Kierkegaard | Wikipedia audio article | 2:16:19 | |
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| 14. | Italian Americans | Wikipedia audio article | 2:15:26 | |
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| 15. | First Industrial Revolution | Wikipedia audio article | 2:14:38 | |
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| 16. | Equipartition principle | Wikipedia audio article | 2:14:31 | |
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| 17. | Russia | Wikipedia audio article | 2:14:25 | |
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| 18. | Global financial crisis of 2008 | Wikipedia audio article | 2:12:33 | |
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| 19. | Wales | Wikipedia audio article | 2:09:47 | |
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| 20. | John Paul II | Wikipedia audio article | 2:08:44 | |
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| 21. | Walmart | Wikipedia audio article | 2:08:18 | |
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| 22. | Vichy France | Wikipedia audio article | 2:06:57 | |
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| 23. | De Havilland Mosquito | Wikipedia audio article | 2:05:32 | |
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| 24. | Malaysian Airlines Flight 370 | Wikipedia audio article | 2:04:03 | |
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| 25. | Iraq | Wikipedia audio article | 2:03:37 | |
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| 26. | Western Roman Empire | Wikipedia audio article | 2:03:35 | |
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| 27. | Air warfare of World War II | Wikipedia audio article | 2:03:15 | |
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| 28. | Buddhist | Wikipedia audio article | 2:03:01 | |
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| 29. | Benito Mussolini | Wikipedia audio article | 2:01:49 | |
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| 30. | United Kingdom | Wikipedia audio article | 2:01:41 | |
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| 31. | Texas | Wikipedia audio article | 1:59:53 | |
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| 32. | Pacific Theater of World War II | Wikipedia audio article | 1:59:02 | |
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| 33. | Bachelor's degree | Wikipedia audio article | 1:57:36 | |
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| 34. | Riba | Wikipedia audio article | 1:56:58 | |
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| 35. | History of chemical warfare | Wikipedia audio article | 1:56:07 | |
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| 36. | Muslim Brotherhood | Wikipedia audio article | 1:55:39 | |
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| 37. | Dominican Republic | Wikipedia audio article | 1:52:21 | |
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| 38. | Age of Discovery | Wikipedia audio article | 1:52:21 | |
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| 39. | Iran | Wikipedia audio article | 1:51:44 | |
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| 40. | Moscow | Wikipedia audio article | 1:51:39 | |
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| 41. | Srivijaya | Wikipedia audio article | 1:49:58 | |
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| 42. | Abraham Lincoln | Wikipedia audio article | 1:49:43 | |
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| 43. | Dwight D. Eisenhower | Wikipedia audio article | 1:49:21 | |
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| 44. | Dwight Eisenhower | Wikipedia audio article | 1:49:03 | |
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| 45. | Lorentz transformation | Wikipedia audio article | 1:48:55 | |
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| 46. | National Front (UK) | Wikipedia audio article | 1:48:35 | |
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| 47. | Iraq War | Wikipedia audio article | 1:48:34 | |
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| 48. | Iran | Wikipedia audio article | 1:48:33 | |
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| 49. | China | Wikipedia audio article | 1:48:30 | |
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| 50. | Dallas, Texas | Wikipedia audio article | 1:47:34 | |
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| 51. | Enlightenment age | Wikipedia audio article | 1:47:09 | |
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| 52. | History of computer and video games | Wikipedia audio article | 1:46:32 | |
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| 53. | Malta | Wikipedia audio article | 1:46:03 | |
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| 54. | Finland | Wikipedia audio article | 1:44:59 | |
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| 55. | Protestant | Wikipedia audio article | 1:44:31 | |
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| 56. | São Paulo | Wikipedia audio article | 1:43:41 | |
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| 57. | Detroit | Wikipedia audio article | 1:43:40 | |
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| 58. | Rome | Wikipedia audio article | 1:43:21 | |
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| 59. | Maharashtra | Wikipedia audio article | 1:43:13 | |
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| 60. | Racial biology | Wikipedia audio article | 1:42:42 | Vlog |
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| 61. | Light artillery | Wikipedia audio article | 1:42:41 | |
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| 62. | First Battle of Gaza | Wikipedia audio article | 1:42:17 | |
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| 63. | Conservative Party (UK) | Wikipedia audio article | 1:40:20 | |
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| 64. | Air National Guard | Wikipedia audio article | 1:40:07 | |
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| 65. | Incomplete gamma function | Wikipedia audio article | 1:39:48 | |
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| 66. | Mutationism-biometrics debate | Wikipedia audio article | 1:39:43 | |
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| 67. | List of important publications in mathematics | Wikipedia audio article | 1:39:40 | |
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| 68. | Benedict XVI | Wikipedia audio article | 1:39:31 | |
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| 69. | Mexican–American War | Wikipedia audio article | 1:39:09 | |
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| 70. | Planet Mars | Wikipedia audio article | 1:39:02 | |
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| 71. | Antitumor antibiotic | Wikipedia audio article | 1:38:53 | |
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| 72. | Pan American World Airways | Wikipedia audio article | 1:38:48 | |
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| 73. | Military history of the United States during World War II | Wikipedia audio article | 1:38:16 | |
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| 74. | Durham Light Infantry | Wikipedia audio article | 1:37:58 | | Light Infantry
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| 75. | Industrial Workers of the World | Wikipedia audio article | 1:37:01 | |
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| 76. | USSR | Wikipedia audio article | 1:36:52 | |
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| 77. | Macedonia (ancient kingdom) | Wikipedia audio article | 1:36:44 | | Ancient Kingdoms
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| 78. | Medieval | Wikipedia audio article | 1:36:18 | |
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| 79. | Sexual harassment | Wikipedia audio article | 1:36:01 | |
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| 80. | Star Wars (film) | Wikipedia audio article | 1:35:55 | |
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| 81. | Evolutionary psychology | Wikipedia audio article | 1:35:30 | Vlog |
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| 82. | Catholic Church and Nazi Germany during World War II | Wikipedia audio article | 1:35:30 | |
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| 83. | Quebec | Wikipedia audio article | 1:34:17 | |
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| 84. | Sanskrit | Wikipedia audio article | 1:33:56 | |
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| 85. | Austin, Texas | Wikipedia audio article | 1:33:35 | |
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| 86. | Nazi | Wikipedia audio article | 1:33:25 | |
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| 87. | Republican Seismic Survey Center of Azerbaijan National Academy of Sciences | Wikipedia audio ar ... | 1:33:14 | |
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| 88. | India | Wikipedia audio article | 1:32:36 | |
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| 89. | Race (human categorization) | Wikipedia audio article | 1:32:32 | |
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| 90. | Allied powers of World War II | Wikipedia audio article | 1:32:18 | |
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| 91. | Catholic Church | Wikipedia audio article | 1:32:10 | |
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| 92. | Globalization | Wikipedia audio article | 1:32:05 | |
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| 93. | Calculus of variations | Wikipedia audio article | 1:31:23 | |
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| 94. | Libertarianism | Wikipedia audio article | 1:31:15 | |
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| 95. | History of women in the United Kingdom | Wikipedia audio article | 1:30:49 | |
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| 96. | Sinophobia | Wikipedia audio article | 1:30:42 | |
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| 97. | Jainism | Wikipedia audio article | 1:30:15 | |
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| 98. | Diesel-electric locomotive | Wikipedia audio article | 1:30:14 | | Loco Motive
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| 99. | Anglican | Wikipedia audio article | 1:29:38 | |
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| 100. | 2011 Japan earthquake | Wikipedia audio article | 1:29:05 | |
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