Columbia subject headings:
Harvard subject headings:
Authors, Chinese--20th century--Correspondence
Lu, Xun, 1881-1936--Correspondence.
Xu, Guangping, 1898-1968--Correspondence.
Princeton subject headings:
Authors, Chinese--20th century--Correspondence.
Lu, Xun, 1881-1936--Correspondence.
Xu, Guangping, 1907-1968--Correspondence.