3 免费艺术作品 适用于 算盘

Houghton Typ 520.03.736 - Margarita philosophica
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Abacus from Map Modeling in Geography, Including the Use of Sand, Clay, Putty, Paper Pulp, Plaster of Paris... Also Chalk Modeling in its Adaptation to Purposes of Illustration. Fully Illustrated published by E.L Kellogg & Co. (1895).
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Vintage European style abacus engraving from New York's Chinatown. A historical presentation of its people and places by Louis J. Beck (1898).
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