Columbia subject headings:
Harvard subject headings:
Biological warfare
Chemical warfare
Gases, Asphyxiating and poisonous--Japan--War use.
Sino-Japanese War, 1937-1945--Biological warfare
Sino-Japanese War, 1937-1945--Chemical warfare.
Princeton subject headings:
Sino-Japanese War, 1937-1945--Atrocities.
Sino-Japanese War, 1937-1945--Biological warfare.