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This category has the following 22 subcategories, out of 22 total.
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544:20th-century scientists by nationality
95:. Due to its scope, it should contain
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529:20th-century scholars by nationality
539:Chemists by century and nationality
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401:20th-century New Zealand chemists
144:20th-century Australian chemists
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307:20th-century Hungarian chemists
381:20th-century Japanese chemists
201:20th-century Canadian chemists
157:20th-century Austrian chemists
131:20th-century American chemists
1:
491:20th-century Swedish chemists
478:20th-century Spanish chemists
441:20th-century Russian chemists
357:20th-century Italian chemists
214:20th-century Chinese chemists
181:20th-century British chemists
421:20th-century Polish chemists
327:20th-century Indian chemists
287:20th-century German chemists
267:20th-century French chemists
504:20th-century Swiss chemists
344:20th-century Irish chemists
247:20th-century Dutch chemists
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534:20th-century chemists
227:Czechoslovak chemists
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469:(5 C, 100 P)
135:(1 C, 976 P)
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385:(1 C, 22 P)
348:(1 C, 21 P)
185:(2 C, 90 P)
523:Categories
89:This is a
331:(166 P)
291:(436 P)
271:(124 P)
508:(14 P)
445:(28 P)
405:(17 P)
361:(17 P)
251:(62 P)
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97:only
71:25th
66:24th
61:23rd
56:22nd
51:21st
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370:J
320:I
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260:F
240:D
194:C
170:B
120:A
102:.
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