Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1839 (original); circa 1988 (replica)
1944
1938 and 1951
1945
2000-100 BCE
4000-2001 BCE
1945
1944
circa 1945
1945
1934; 1947
1945
1952-3
1944-1945
1990-95
1944
1903 (original); 1982 (model)
1945
1955; 1830
1945
6000-5000BCE
1960-1979
1879 (1956)
1945
1798 (original); 1977 (model)
1935; 1958
2050-1750 BCE
1888; 1984
1944
1944-1945
1944
1990-96
1945
1976; 1776
1962-05
1945
2000-1001 BCE
8500-2000 BCE
circa 1945
1991-1783 BCE
1701-1800; 1982
circa 3000 BCE
1944
2000-100 BCE
1944
1975-1978
10000-5001 BCE
8500-2000 BCE
1901-1930; 1963