Columbia subject headings:
Excretion--Japan--History.
Japan--Social life and customs--1600-1868.
Toilets--Japan--History.
Harvard subject headings:
Excretion--Japan--History--Edo period, 1600-1868.
Toilets--Japan--History--Edo period, 1600-1868.
Princeton subject headings:
Excretion--Japan--History--Edo period, 1600-1868.
Toilets--Japan--History--Edo period, 1600-1868.