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BACK 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949
Basic chemistry 0 0 0 0 0 0 0 0 0 0
Applied chemistry 0 0 0 0 0 0 0 0 0 0
Materials chemistry 0 0 0 0 0 0 0 0 0 0
BACK 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949
Events in Japan 0 0 0 0 0 2 3 2 3 3
Events in the World 0 0 0 0 0 1 1 0 3 3
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