Columbia subject headings:
Zen Buddhism--Doctrines--Early works to 1800.
Zen Buddhism--History--Early works to 1800.
Harvard subject headings:
Gautama Buddha--Early works to 1800.
Zen Buddhism--Doctrines--Early works to 1800
Zen Buddhism--History--Early works to 1800.
Princeton subject headings:
Gautama Buddha--Early works to 1800.
Zen Buddhism--Doctrines--Early works to 1800.
Zen Buddhism--History--Early works to 1800.