
Crick and Watson's DNA Molecular Model
1953
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1942
1948-1953
1945
1935
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1950-1952
1946-1950
1936
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1948-1950
1948-1953
1945
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1943
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1947
1947
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1948
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1938
1935
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1942
1940
1936
1934
1950
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1953
1938
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1950
1951
1934-1935
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1949
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1953