Shiny blue white board marker. Derived from this clipart by lmproulx: http://openclipart.org/detail/104611/marqueur-marker-by-lmproulx 董事会 课堂 教育 白板笔
Calculator, university, wheelchair and whiteboard vector graphic can be downloaded for free calculatoruniversitywheelchair 白板 计算器、 大学、 轮椅和白板
2 Business concept illustrations with world globe and cityscape 世界 全球 世界各地 2 Global Business Concept Illustration Set
Calculator, university, wheelchair and whiteboard vector graphic can be downloaded for free calculatoruniversitywheelchair 白板 Calculator, university, wheelchair and whiteboard
从美国政府 EPA"Sunwise"程序图像。我转换了它从 PDF 格式，并删除所有的"sunwise"商标。源的链接是在这里-http://www.epa.gov/sunwise/doc/mission_story.pdf 媒体 剪贴画 公共领域 指向板
