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This category has the following 13 subcategories, out of 13 total.
343:
Pages in category "Infrastructure completed in the 20th century"
380:
Buildings and structures completed in the 20th century
327:
Transport infrastructure completed in the 20th century
303:
Energy infrastructure completed in the 20th century
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346:This category contains only the following page.
348:This list may not reflect recent changes
385:Infrastructure by century of completion
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255:Infrastructure completed in the 1990s
238:Infrastructure completed in the 1980s
221:Infrastructure completed in the 1970s
204:Infrastructure completed in the 1960s
187:Infrastructure completed in the 1950s
170:Infrastructure completed in the 1940s
153:Infrastructure completed in the 1930s
136:Infrastructure completed in the 1920s
119:Infrastructure completed in the 1910s
102:Infrastructure completed in the 1900s
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283:(10 C, 1 P)
225:(12 C, 2 P)
191:(12 C, 1 P)
174:(12 C, 1 P)
374:Categories
307:(100 C)
331:(15 C)
259:(12 C)
242:(12 C)
208:(12 C)
157:(12 C)
140:(12 C)
123:(12 C)
106:(12 C)
71:25th
66:24th
61:23rd
56:22nd
51:21st
46:20th
41:19th
36:18th
31:17th
26:16th
21:15th
91:0–9
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356:L
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292:E
268:D
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