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This category has the following 7 subcategories, out of 7 total.
15:
274:Fictional elements introduced in the 20th century
255:
264:Fictional elements by decade of introduction
256:
239:Fictional elements introduced in 1909
226:Fictional elements introduced in 1907
213:Fictional elements introduced in 1905
200:Fictional elements introduced in 1904
187:Fictional elements introduced in 1903
174:Fictional elements introduced in 1901
161:Fictional elements introduced in 1900
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269:1900s introductions
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145:Subcategories
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258:Categories
243:(1 P)
230:(1 P)
217:(1 P)
204:(3 P)
191:(1 P)
178:(1 P)
165:(7 P)
71:1950s
66:1940s
61:1930s
56:1920s
51:1910s
46:1900s
41:1890s
36:1880s
31:1870s
26:1860s
21:1850s
134:25th
129:24th
124:23rd
119:22nd
114:21st
108:20th
102:19th
97:18th
92:17th
87:16th
82:15th
154:0–9
260::
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189:
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