friedrich wöhler (1800-1882), german chemist, wood engraving, published in 1877 - 發明家 幅插畫檔、美工圖案、卡通及圖標
alessandro volta (1745-1827), italian physicist, wood engraving, published in 1882 - 發明家 幅插畫檔、美工圖案、卡通及圖標
johann friedrich böttger, german alchemist, chemist and inventor, co-inventor of european hard porcelain - 發明家 幅插畫檔、美工圖案、卡通及圖標
