3 免費藝術品 適用於 電子計算機

插畫書籍碟優質的文物素描老的
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).
電子計算機鉛筆
"Máchina de calcular Brungsviga"
插畫書籍
"Machina de calcular de Maurel e Jayet".
插畫書籍
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