Graphic created from the three stages description of amalgam lifespan (p.65). Source: Daunderer M. (2011). Gifte im Alltag. München: C.H. Beck, 3 ed. 银汞合金 科学 教育 牙科银汞合金充填阶段
animals ganson dog mammals dogs copper beagle animal mammal Copper The Beagle clip art 铜 比格犬 动物 铜比格犬剪贴画