忠勤
Subtitle: Yang rong chang zhu zuo jing xuan ji
By: [Yang Rongchang zhu]
Publisher: [s.n.]
Published: 1997
Place of publication: [s.l.]
Language: chi
Number of pages: 677
Other titles: Zhong qin; Yang Rongchang zhu zuo jing xuan ji
Notes: Cover title.