
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1942
1952-3
1830 (original); 1967 (model)
1946
1839 (original); circa 1988 (replica)
1990-96
1945
2000-100 BCE
1947
1945
1990-95
1946
1946
1942
1938 and 1951
1947
1943-1945
1942-1946
1943
1944
1946
1945
1943
1945
1942-1945
1943
1947
circa 1945
1903 (original); 1982 (model)
4000-2001 BCE
1947
1960-1979
2050-1750 BCE
1955; 1830
circa 1945
1944
1798 (original); 1977 (model)
1879 (1956)
2000-1001 BCE
1942-1943
1942
1945
1947
1801-1892 (prepared); 1946 (element replaced)
1942-1945
1943
1888; 1984
6000-5000BCE
1946