Columbia subject headings:
Harvard subject headings:
Agriculture--China--History
Hirosawa, Kichihei, 1898-1989
Land use, Rural--China--History.
Sericulture--China--History.
Princeton subject headings:
Agriculture--China--History.
Hirosawa, Kichihei, 1898-1989.
Land use, Rural--China--History.
Sericulture--China--History.