Lessons in Zoology by Clarabel Gilman, Common Animal Forms, New England Pub. Co prior to 1911 蜗牛 外壳 动物 蜗牛壳
lineart snail shell animal reptile molusc outlinel Snail clip art 蜗牛 动物 媒体 艺术线条蜗牛壳动物爬行动物 Molusc Outlinel