Study of maidservants in Beijing during the Republic of China Study of crime issues in Beijing during the Republic of China 并列题名：Study of crime issues in Beijing during the Republic of China study on private gardens in Shanghai during the Republic of China Essence of study of Beijing during the republic of China Study on women's prisons in Shanghai during the Republic of China European and American people and Beijing during the republic of China 并列题名：Study on women's prisons in Shanghai during the Republic of China Clerk trade union during the republic of China Study on the international communication of Chinese during the republic of China