【作者(必填)】Kalman

【文题(必填)】Math Olympiad Contest Problems, Volume 2 (REVISED) [color=rgb(85, 85, 85) !important]


【年份(必填)】2008

【全文链接或数据库名称(选填)】https://www.amazon.com/gp/product/B00XHGQKXU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1