Lao nian yi xue
By: [Yang Weiyi, Li Yan].
Contributors: Li, Yan.
Edition: Di 1 ban
Publisher: Ningxia ren min chu ban she; Ningxia xin hua shu dian fa xing
Published: 1984
Place of publication: Yinchuan Shi
Language: chi
Number of pages: 668
Subjects: Geriatrics.