Columbia subject headings:
Harvard subject headings:
Guo, Huaruo, 1904-1995.
Mao, Zedong, 1893-1976--Correspondence.
Mao, Zedong, 1893-1976--Friends and associates.
Princeton subject headings:
Guo, Huaruo, 1904-1995.
Mao, Zedong, 1893-1976--Friends and associates.