塗世澤

比例和百分法 by: 沈超; 塗世澤 (Electronic resources)

幾何基礎知識 by: 趙華; 塗世澤; 金懋曦; 趙燧之 (Electronic resources)

幾何淺說 by: 趙華; 塗世澤 (Electronic resources)

算術基礎知識 by: 沈超; 塗世澤; 胡光惠; 姜國實 (Electronic resources)

簡捷算法 by: 沈超; 塗世澤 (Electronic resources)

三角形的巧合點 by: 塗世澤 (Electronic resources)