
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1955
1960
1951
1960
1953
1955
1957
circa 1956
circa 1956-1959
1963
1960
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1951-1953
1953
1959
circa 1956
1960
1961
1962
1952-3
1960
1950-1959
1955
1950-1959
1955
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circa 1960
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1950-1960
1963
circa 1955
1957
1950-1960
1950-1960
1962
1958
1956
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1952
1963
1962
1963
1959
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1954
1952