
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1952-3
1830 (original); 1967 (model)
1946
1948
1839 (original); circa 1988 (replica)
1946-1948
1948
1990-96
1948
1945
2000-100 BCE
1947
1945
1990-95
1946
1946
1938 and 1951
1947
1944
1910 - 1954
1946
1945
1945
1947
circa 1945
1948
1903 (original); 1982 (model)
4000-2001 BCE
1948 - 1969
1947
1960-1979
1948
2050-1750 BCE
1948
1955; 1830
1945-1948
circa 1945
1944
1798 (original); 1977 (model)
1879 (1956)
2000-1001 BCE
1948
1945
1947
1801-1892 (prepared); 1946 (element replaced)
1946-1948
1947-1948
1945-1948
1888; 1984