中俄勘分西北界约记 (中俄勘分西北界約記) Zhōngé Kān Fēn Xīběi Jiè Yuē jì

Zhōngé Kān Fēn Xīběi Jiè Yuē jì proper noun China-Russia Northwest Border Agreement
Domain: History 历史 , Subdomain: China , Concept: Treaty 条约
Notes: 1864