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17-August-2024 Saturday
What kind of strange triangles with numbers were stamped on various ancient buildings?

What kind of strange triangles with numbers were stamped on various ancient buildings? - Ancient artifacts, History, Building, Geodesy, Informative, Architecture, Level, Signs, Sazhen, Telegram (link), Longpost

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Telegram (link) Architecture Geodesy Ancient artifacts Signs History Informative Sazhen Building Level

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