Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1990-96
1943
1943-1945
1938 and 1951
1945
1903 (original); 1982 (model)
2000-100 BCE
1943
4000-2001 BCE
1945
1955; 1830
1943
1943
1944
circa 1945
1945
1945
1934; 1947
1944-1945
1944
1952-3
1944
1990-95
1945
1945
1960-1979
6000-5000BCE
1879 (1956)
1798 (original); 1977 (model)
1945
1943
2050-1750 BCE
1935; 1958
1944-1945
1943
1888; 1984
1945
1944
1944
1943-1944
1962-05
1945
1976; 1776
1943
circa 1945
8500-2000 BCE
2000-1001 BCE