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This category has the following 8 subcategories, out of 8 total.
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251:Building and structure types by continent
32:. Due to its scope, it should contain
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84:Roman fortifications by continent
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221:Fortifications in South America
173:Fortifications in North America
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197:Fortifications in Oceania
149:Fortifications in Europe
108:Fortifications in Africa
125:Fortifications in Asia
67:Bunkers by continent
29:container category
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240:Categories
177:(6 C, 1 P)
129:(4 C, 2 P)
112:(2 C, 6 P)
26:This is a
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34:only
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186:O
162:N
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97:A
39:.
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