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Removeable type book.jpg - Gisling
VerbiestBeijingObservatory.jpg - World Imaging
Sublimation of calomel (mercurous chloride), Ming Dynasty.jpg - PericlesofAthens
Wan Hu large.png - SreeBot
Machine for the spinning of thread - technology from the time of the Ming dynasty.jpg - Szilas
Mill - technology from the time of the Ming dynasty.jpg - Szilas
Pottery workshop - technology from the time of the Ming dynasty.jpg - Szilas
Seeding machine - technology from the time of the Ming dynasty.jpg - Szilas
Ming Dynasty Jin Ping Mei fireworks.jpg - Rurik the Varangian
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