Columbia subject headings:
Harvard subject headings:
Science--China--Chongqing.
Sino-Japanese War, 1937-1945--China--Chongqing.
Technology--China--Chongqing.
Princeton subject headings:
Science--China--Chongqing.
Sino-Japanese War, 1937-1945--China--Chongqing.
Technology--China--Chongqing.