
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1945
1946
1943
1947
1944
1955; 1830
1946
2000-100 BCE
1945
1946
1946
1943
1947
1946
1938 and 1951
1944-1945
1903 (original); 1982 (model)
1990-96
circa 1945
1830 (original); 1967 (model)
1952-3
1947
1839 (original); circa 1988 (replica)
1947
1801-1892 (prepared); 1946 (element replaced)
1945-1946
1944
4000-2001 BCE
circa 1947
1947
1943
1943-1945
1947
1944
1947
1944
1943-04-26
1943-06-15
1943-05-12
1943-04-26
1943-06-15
1943
1943-02-17
1943-06-15
1943-05-12
1943-02-17
1943-07-28
1943-06-29
1943