| 2018-11-24 | Samanid Empire | Wikipedia audio article | 30:50 | 448 | |
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| 2018-11-24 | Hittites | Wikipedia audio article | 49:35 | 81 | |
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| 2018-11-24 | French and Indian War | Wikipedia audio article | 46:22 | 85 | |
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| 2018-11-24 | Crown colony | Wikipedia audio article | 5:09 | 23 | |
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| 2018-11-24 | Côn Sơn Island | Wikipedia audio article | 7:04 | 15 | |
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| 2018-11-24 | Bay Islands Department | Wikipedia audio article | 25:57 | 12 | |
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| 2018-11-24 | Commonwealth of Australia | Wikipedia audio article | 1:01:09 | 49 | |
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| 2018-11-24 | Antigua | Wikipedia audio article | 27:49 | 11 | |
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| 2018-11-24 | Falklands War | Wikipedia audio article | 1:14:00 | 125 | |
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| 2018-11-24 | British Guiana | Wikipedia audio article | 15:20 | 52 | |
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| 2018-11-24 | Province of Maryland | Wikipedia audio article | 33:59 | 96 | |
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| 2018-11-24 | Amsterdam | Wikipedia audio article | 1:30:05 | 181 | |
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| 2018-11-24 | Mike Pence | Wikipedia audio article | 1:19:36 | 111 | |
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| 2018-11-24 | Madison, Wisconsin | Wikipedia audio article | 1:01:44 | 160 | |
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| 2018-11-24 | Science | Wikipedia audio article | 1:01:54 | 24 | |
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| 2018-11-24 | Equator | Wikipedia audio article | 10:49 | 4 | |
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| 2018-11-24 | Oceanic climate | Wikipedia audio article | 21:42 | 14 | |
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| 2018-11-24 | NBC | Wikipedia audio article | 1:49:33 | 1,072 | |
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| 2018-11-24 | Hebrew language | Wikipedia audio article | 48:38 | 38 | |
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| 2018-11-24 | Sunraysia | Wikipedia audio article | 4:40 | 3 | |
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| 2018-11-24 | Kula Gulf | Wikipedia audio article | 2:21 | 56 | |
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| 2018-11-24 | Eastern Slovak Lowland | Wikipedia audio article | 0:43 | 6 | |
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| 2018-11-24 | Paria Peninsula | Wikipedia audio article | 1:42 | 10 | |
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| 2018-11-24 | Central Mountain Range | Wikipedia audio article | 2:44 | 6 | |
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| 2018-11-24 | Ordos Loop | Wikipedia audio article | 15:21 | 22 | |
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| 2018-11-24 | Eber-Nari | Wikipedia audio article | 6:21 | 29 | |
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| 2018-11-24 | Asia-Pacific | Wikipedia audio article | 5:13 | 19 | |
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| 2018-11-24 | Mississippi Delta | Wikipedia audio article | 28:31 | 211 | |
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| 2018-11-24 | Ring of Fire | Wikipedia audio article | 45:54 | 126 | |
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| 2018-11-24 | Serengeti | Wikipedia audio article | 9:32 | 6 | |
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| 2018-11-24 | Sun Belt | Wikipedia audio article | 7:26 | 1 | |
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| 2018-11-24 | 1840 United States Census | Wikipedia audio article | 4:35 | 0 | |
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| 2018-11-24 | Income tax | Wikipedia audio article | 22:15 | 16 | |
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| 2018-11-24 | Admission to the Union | Wikipedia audio article | 17:20 | 13 | |
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| 2018-11-24 | 1980 United States Census | Wikipedia audio article | 2:30 | 3 | |
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| 2018-11-24 | Federal Reporter | Wikipedia audio article | 3:45 | 5 | |
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| 2018-11-24 | Drinking water supply and sanitation in the United States | Wikipedia audio article | 1:05:46 | 50 | |
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| 2018-11-24 | Lists of populated places in the United States | Wikipedia audio article | 17:08 | 2 | |
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| 2018-11-24 | District of Columbia statehood movement | Wikipedia audio article | 24:36 | 10 | |
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| 2018-11-24 | Civil liberties in the United States | Wikipedia audio article | 9:45 | 1 | |
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| 2018-11-24 | Confederation Period | Wikipedia audio article | 52:54 | 24 | |
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| 2018-11-24 | Political ideologies in the United States | Wikipedia audio article | 20:51 | 18 | Vlog |
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| 2018-11-24 | Demography of the United States | Wikipedia audio article | 41:03 | 10 | |
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| 2018-11-24 | Music of the United States | Wikipedia audio article | 1:20:09 | 306 | |
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| 2018-11-24 | American Century | Wikipedia audio article | 12:13 | 9 | |
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| 2018-11-23 | List of Indian reservations in the United States | Wikipedia audio article | 3:37 | 6 | |
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| 2018-11-23 | Mississippi | Wikipedia audio article | 1:24:25 | 45 | |
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| 2018-11-23 | Urban area | Wikipedia audio article | 26:22 | 17 | |
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| 2018-11-23 | Al Gore | Wikipedia audio article | 1:05:15 | 109 | |
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| 2018-11-23 | Ecuador | Wikipedia audio article | 1:39:21 | 112 | |
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| 2018-11-22 | Turkmenistan | Wikipedia audio article | 39:50 | 135 | |
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| 2018-11-22 | Andorra | Wikipedia audio article | 50:21 | 70 | |
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| 2018-11-22 | Qatar | Wikipedia audio article | 1:09:34 | 198 | |
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| 2018-11-22 | Lithuania | Wikipedia audio article | 2:10:18 | 370 | |
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| 2018-11-22 | University of Nebraska–Lincoln | Wikipedia audio article | 26:12 | 13 | |
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| 2018-11-22 | School colors | Wikipedia audio article | 3:53 | 5 | |
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| 2018-11-22 | Cambridge | Wikipedia audio article | 48:24 | 53 | |
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| 2018-11-22 | Istituto Centrale per il Catalogo Unico | Wikipedia audio article | 1:07 | 5 | Vlog |
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| 2018-11-22 | New York (state) | Wikipedia audio article | 1:21:51 | 96 | |
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| 2018-11-22 | Physical chemistry | Wikipedia audio article | 10:08 | 4 | |
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| 2018-11-22 | Carl R. de Boor | Wikipedia audio article | 7:03 | 35 | |
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| 2018-11-22 | Archer Martin | Wikipedia audio article | 3:22 | 41 | |
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| 2018-11-22 | Arthur Harden | Wikipedia audio article | 3:46 | 72 | |
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| 2018-11-22 | Paul L. Modrich | Wikipedia audio article | 2:20 | 20 | |
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| 2018-11-22 | Aaron Ciechanover | Wikipedia audio article | 5:24 | 9 | |
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| 2018-11-22 | Fritz Haber | Wikipedia audio article | 33:19 | 76 | |
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| 2018-11-22 | Alan MacDiarmid | Wikipedia audio article | 5:59 | 93 | |
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| 2018-11-22 | Osamu Shimomura | Wikipedia audio article | 5:41 | 73 | |
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| 2018-11-22 | Jacobus Henricus van 't Hoff | Wikipedia audio article | 8:05 | 331 | |
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| 2018-11-22 | Peter D. Mitchell | Wikipedia audio article | 4:27 | 216 | |
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| 2018-11-22 | Paul Hermann Müller | Wikipedia audio article | 16:15 | 199 | |
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| 2018-11-22 | Emil Theodor Kocher | Wikipedia audio article | 26:57 | 529 | |
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| 2018-11-22 | August Krogh | Wikipedia audio article | 7:17 | 336 | |
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| 2018-11-22 | Leland H. Hartwell | Wikipedia audio article | 5:02 | 48 | |
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| 2018-11-22 | Christiane Nüsslein-Volhard | Wikipedia audio article | 6:27 | 52 | Vlog |
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| 2018-11-22 | Phillip Allen Sharp | Wikipedia audio article | 15:08 | 13 | |
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| 2018-11-22 | Rodney Robert Porter | Wikipedia audio article | 3:41 | 50 | |
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| 2018-11-22 | César Milstein | Wikipedia audio article | 6:05 | 83 | |
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| 2018-11-22 | David H. Hubel | Wikipedia audio article | 6:12 | 12 | |
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| 2018-11-22 | Andrew Huxley | Wikipedia audio article | 14:40 | 47 | |
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| 2018-11-22 | California | Wikipedia audio article | 1:28:27 | 118 | |
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| 2018-11-22 | Johns Hopkins University | Wikipedia audio article | 43:17 | 42 | |
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| 2018-11-22 | MIT | Wikipedia audio article | 1:10:26 | 67 | |
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| 2018-11-22 | Neal E. Miller | Wikipedia audio article | 16:35 | 374 | |
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| 2018-11-22 | Keith Roberts Porter | Wikipedia audio article | 3:15 | 12 | |
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| 2018-11-22 | Theodor O. Diener | Wikipedia audio article | 5:24 | 70 | |
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| 2018-11-22 | Richard Barry Bernstein | Wikipedia audio article | 1:17 | 6 | |
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| 2018-11-22 | James A. Van Allen | Wikipedia audio article | 31:09 | 13 | |
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| 2018-11-22 | Isabella L. Karle | Wikipedia audio article | 4:40 | 26 | |
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| 2018-11-22 | Herman Mark | Wikipedia audio article | 9:26 | 30 | |
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| 2018-11-22 | Elvin A. Kabat | Wikipedia audio article | 3:57 | 102 | |
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| 2018-11-22 | Darleane C. Hoffman | Wikipedia audio article | 2:51 | 36 | |
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| 2018-11-22 | Daniel I. Arnon | Wikipedia audio article | 2:42 | 40 | |
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| 2018-11-22 | Bernard M. Oliver | Wikipedia audio article | 3:06 | 10 | |
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| 2018-11-22 | Antoni Zygmund | Wikipedia audio article | 4:46 | 94 | |
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| 2018-11-22 | Richard Karp | Wikipedia audio article | 4:14 | 6 | |
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| 2018-11-22 | Jared Diamond | Wikipedia audio article | 14:03 | 31 | |
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| 2018-11-22 | Ralph L. Brinster | Wikipedia audio article | 7:59 | 18 | Let's Play |
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| 2018-11-22 | Stanley Falkow | Wikipedia audio article | 7:14 | 20 | |
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| 2018-11-22 | Stanley Cohen (biochemist) | Wikipedia audio article | 2:18 | 43 | |
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