| 401. | Second Anglo-Sikh War | Wikipedia audio article | 249 | |
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| 402. | Benghazi | Wikipedia audio article | 247 | |
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| 403. | Fairey Aviation Company | Wikipedia audio article | 247 | |
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| 404. | Methoxyflurane | Wikipedia audio article | 247 | |
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| 405. | Rudolf Steiner | Wikipedia audio article | 247 | |
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| 406. | Mara (demon) | Wikipedia audio article | 246 | |
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| 407. | Battle of Lepanto | Wikipedia audio article | 246 | |
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| 408. | Journey to the 7th Planet | Wikipedia audio article | 245 | |
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| 409. | Mediator Dei | Wikipedia audio article | 245 | |
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| 410. | San Antonio, Texas | Wikipedia audio article | 245 | |
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| 411. | Twelver | Wikipedia audio article | 245 | |
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| 412. | Frederick Gowland Hopkins | Wikipedia audio article | 245 | |
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| 413. | Pour le Mérite for Science and Art | Wikipedia audio article | 242 | |
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| 414. | List of continuity-related mathematical topics | Wikipedia audio article | 242 | |
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| 415. | Yakan language | Wikipedia audio article | 242 | |
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| 416. | Dimethyltrienolone | Wikipedia audio article | 242 | |
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| 417. | Alexander Friedmann | Wikipedia audio article | 242 | |
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| 418. | Butuan City | Wikipedia audio article | 240 | |
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| 419. | West Germanic languages | Wikipedia audio article | 240 | |
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| 420. | Evangelista Torricelli | Wikipedia audio article | 240 | |
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| 421. | Staff of Moses | Wikipedia audio article | 238 | |
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| 422. | Sisters of St. Joseph | Wikipedia audio article | 237 | |
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| 423. | Electrical resistivity tomography | Wikipedia audio article | 236 | |
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| 424. | Hanunó'o alphabet | Wikipedia audio article | 235 | Let's Play |
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| 425. | Arabic Braille | Wikipedia audio article | 235 | |
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| 426. | Styx (moon) | Wikipedia audio article | 235 | |
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| 427. | Proto-Indo-Iranian religion | Wikipedia audio article | 234 | |
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| 428. | Propafenone | Wikipedia audio article | 234 | |
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| 429. | Poland | Wikipedia audio article | 234 | |
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| 430. | John Dee (mathematician) | Wikipedia audio article | 234 | |
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| 431. | Mathura International Airport | Wikipedia audio article | 234 | |
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| 432. | Norethisterone enanthate | Wikipedia audio article | 233 | |
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| 433. | Gordon Lightfoot | Wikipedia audio article | 233 | |
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| 434. | Genki (company) | Wikipedia audio article | 233 | |
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| 435. | Oregano (software) | Wikipedia audio article | 233 | |
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| 436. | Ijaw languages | Wikipedia audio article | 232 | |
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| 437. | Kurashiki University of Science and the Arts | Wikipedia audio article | 232 | |
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| 438. | Phenol | Wikipedia audio article | 231 | |
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| 439. | Satellite of Love (Mystery Science Theater 3000) | Wikipedia audio article | 231 | |
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| 440. | Number Nine Visual Technology | Wikipedia audio article | 230 | Vlog |
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| 441. | Jean-Baptiste Lamarck | Wikipedia audio article | 230 | |
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| 442. | Brayton engine | Wikipedia audio article | 230 | |
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| 443. | Dobos torte | Wikipedia audio article | 229 | |
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| 444. | Jamaica | Wikipedia audio article | 229 | |
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| 445. | United Africa Company | Wikipedia audio article | 228 | |
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| 446. | Kelupis | Wikipedia audio article | 228 | |
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| 447. | Wolfgang Pauli | Wikipedia audio article | 228 | |
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| 448. | Human iron metabolism | Wikipedia audio article | 227 | |
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| 449. | Coimbatore | Wikipedia audio article | 227 | |
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| 450. | Dundee cake | Wikipedia audio article | 227 | |
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| 451. | Plan 9 from Bell Labs | Wikipedia audio article | 226 | |
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| 452. | Middle English | Wikipedia audio article | 226 | |
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| 453. | Hosea Kutako International Airport | Wikipedia audio article | 226 | |
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| 454. | Bogotá | Wikipedia audio article | 226 | |
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| 455. | Venezuela | Wikipedia audio article | 225 | |
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| 456. | Rape of Belgium | Wikipedia audio article | 225 | |
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| 457. | Nibiru cataclysm | Wikipedia audio article | 223 | |
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| 458. | Hungary | Wikipedia audio article | 223 | |
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| 459. | Q&A (software) | Wikipedia audio article | 222 | |
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| 460. | Human | Wikipedia audio article | 222 | |
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| 461. | Palawano language | Wikipedia audio article | 222 | |
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| 462. | Ottoman Turkish language | Wikipedia audio article | 221 | |
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| 463. | Tanghalang Francisco Balagtas | Wikipedia audio article | 221 | |
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| 464. | Singer Manufacturing Company | Wikipedia audio article | 221 | |
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| 465. | Ratlines (World War II aftermath) | Wikipedia audio article | 221 | |
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| 466. | Biotic stress | Wikipedia audio article | 220 | |
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| 467. | Esterified estrogens/methyltestosterone | Wikipedia audio article | 220 | |
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| 468. | National Awami Party (Wali) | Wikipedia audio article | 219 | |
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| 469. | Simon Magus | Wikipedia audio article | 219 | |
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| 470. | Korean Braille | Wikipedia audio article | 218 | |
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| 471. | Soviet–Albanian split | Wikipedia audio article | 218 | |
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| 472. | War elephant | Wikipedia audio article | 217 | |
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| 473. | Slave iron bit | Wikipedia audio article | 217 | |
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| 474. | Badges of the United States Navy | Wikipedia audio article | 216 | |
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| 475. | Centerbe | Wikipedia audio article | 215 | |
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| 476. | Phat kaphrao | Wikipedia audio article | 215 | |
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| 477. | Conscience | Wikipedia audio article | 215 | |
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| 478. | Colorless green ideas sleep furiously | Wikipedia audio article | 214 | |
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| 479. | Anna Mae Pictou Aquash | Wikipedia audio article | 214 | |
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| 480. | Kedatuan of Madja-as | Wikipedia audio article | 214 | |
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| 481. | List of Muslim mathematicians | Wikipedia audio article | 213 | |
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| 482. | Dinka religion | Wikipedia audio article | 213 | |
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| 483. | Trans-Neptunian object | Wikipedia audio article | 213 | |
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| 484. | United Nations Commission on International Trade Law | Wikipedia audio article | 211 | |
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| 485. | Santiago (Philippine city) | Wikipedia audio article | 210 | |
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| 486. | Jubilee Insurance Company Limited | Wikipedia audio article | 210 | |
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| 487. | National Parliament of the Solomon Islands | Wikipedia audio article | 210 | |
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| 488. | Plane wave expansion method | Wikipedia audio article | 209 | |
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| 489. | Chaos (mathematics) | Wikipedia audio article | 208 | |
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| 490. | Crucifixion of Jesus | Wikipedia audio article | 208 | |
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| 491. | Vikram A Sarabhai Community Science Centre | Wikipedia audio article | 208 | |
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| 492. | Twelver | Wikipedia audio article | 208 | |
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| 493. | Hino Motors | Wikipedia audio article | 208 | |
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| 494. | View-Master Interactive Vision | Wikipedia audio article | 208 | |
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| 495. | Masonic bodies | Wikipedia audio article | 207 | |
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| 496. | PSR B1919+21 | Wikipedia audio article | 207 | |
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| 497. | Giovanni Pico della Mirandola | Wikipedia audio article | 207 | |
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| 498. | Taiwan | Wikipedia audio article | 206 | |
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| 499. | Trident Seafoods | Wikipedia audio article | 206 | |
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| 500. | Lewis F. Powell Jr. | Wikipedia audio article | 206 | |
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