Dui cheng
By: Duan Xuefu zhu
Series: Qing nian shu xue xiao cong shu; Qing nian shu xue xiao cong shu
Publisher: Zhongguo qing nian chu ban she
Published: 1862
Place of publication: Beijing
Language: chi
Number of pages: 38
Subjects: Symetry; Symetric function