
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
2000-100 BCE
1945
1955; 1830
1945
1944
1938 and 1951
1944-1945
1839 (original); circa 1988 (replica)
1944
1903 (original); 1982 (model)
4000-2001 BCE
1990-96
circa 1945
1830 (original); 1967 (model)
1801-1892 (prepared); 1946 (element replaced)
1990-95
1952-3
1944
1952-3
1945
1945
1960-1979
1945
1956-09
1945
1944
1945-11-10
1956-09
1950-08
1944-12-01
1945-06-01
1945-04-06
1945
1944
1944
1945-11-04
1944-12-01
1944-03-17
1945-11-08
1944
1944 -1945
1951-06
1945-11
1947-04
1944-09-09
1962-10
1945-05-15
1945-07-18
1956-09