
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1830 (original); 1967 (model)
1945
2000-100 BCE
1945
1945
1955; 1830
1938 and 1951
1801-1892 (prepared); 1946 (element replaced)
4000-2001 BCE
1839 (original); circa 1988 (replica)
1990-96
circa 1945
1903 (original); 1982 (model)
1990-95
1945
1945
1945
1945
1970-1900
1945
1945
30 CE
30 CE
2686-2613 BCE
1859; 1986
1945-50
1945
1945
30-200
2000-1350
20-500
20-500
2000-1000
3500-1000
2000-1350
1950-1900
1972-3
2000-1000
1950-1920
2000-800
1962-07
1968-04
1945-06-01
1945-04-06
1945
1945-11-04
1945-11-08
1951-06
1945-11