
Crick and Watson's DNA Molecular Model
1953
1953
1953
1955
1955
1951
1951-1953
1839 (original); circa 1988 (replica)
1955
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1957
1957
1955
circa 1955
1953
1951
1955
1951
1951
1955
1954-1955
1957
1955
1951
May 1953
1955
1954
1951
1953
1956
1955
1954
1957
circa 1955
1956
1952
1955
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1952
1955
1957
1954
1952
1954
1957
1956
1957
1956
1957
1952
1954