力量:平衡中的竞争力量。孩子们拉着一个环,每个人都用绳子从自己身边拉过,同时保持平衡。1925年的匿名插图。私人收藏。(Forces: competing forces in balance. Children pulling on a ring, each by a rope from their side, while remaining in balance. Anonymous illustration from 1925. Private collection.)匿名匿名 |
€ 99.08
Enthält 0% MwSt.
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日期不详 · Engraving
· 图片ID: 925348
Private Collection / Bridgeman Images |
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