Wu si yun dong
By: Liao Dawei, Ma Jun.
Contributors: Ma, Jun.
Edition: Di 1 ban
Publisher: Shanghai shu dian chu ban she; Xin hua shu dian Shanghai fa xing suo jing xiao
Published: 1999
Place of publication: Shanghai
Language: chi
Number of pages: 144
Subjects: China -- History -- May Fourth Movement, 1919.