Columbia subject headings:
Harvard subject headings:
Correspondence schools and courses--China--History--Chronology.
Correspondence schools and courses--China--History--Sources.
Education, Higher--China--History--Chronology.
Education, Higher--China--History--Sources.
Princeton subject headings:
Correspondence schools and courses--China--History--Chronology.
Correspondence schools and courses--China--History--Sources.
Education, Higher--China--History--Chronology.
Education, Higher--China--History--Sources.