. 中文（简体）‎: 杨辉算法书影 . circa 1250. Yang Hui (Song dynasty) 571 Yanghuisuanfa-004

---

Size: 1780px × 2808px
Photo credit: © The Picture Art Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /, /., 1250., circa, hui, yang