US-CT(1891) p142 BRIDGEPORT, SPRINGFIELD EMERY WHEEL COMPANY.jpg
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US CT(1891) p142 BRIDGEPORT, SPRINGFIELD EMERY WHEEL COMPANY, 1891 in Connecticut, Buildings in Bridgeport, Connecticut, King's Hand-book of the United States (1891) by SWEETSER, Uploaded by the British Library, Images from the British Library Mechanical Curator collection, Images from the British Library
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米国CT(1891) p142 BRIDGEPORT、英国図書館機械学修士コレクションの画像、大英図書館の画像
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emery metamorphic rock