
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1946-1950
1949
1949
1948-1950
1945
1948
1946
1948
1947
1950
1950
1949
1955; 1830
circa 1950
1950
1946-1948
1946
1950
2000-100 BCE
1945
1946
1948
1949
1946
1947
1946
1938 and 1951
circa 1950
1948
1948
1945-1948
1949
1903 (original); 1982 (model)
1948
1990-96
circa 1945
1948
1830 (original); 1967 (model)
1952-3
circa 1950
circa 1950
1949
1947
1950
1839 (original); circa 1988 (replica)
1948
1950
1947
1950