
Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1945
1830 (original); 1967 (model)
1952-3
1946
1944
1946-1948
1946
1943
1946
1948
1946
1947
1955; 1830
1947
1944-1945
1948
1948
1938 and 1951
2000-100 BCE
1945-1948
1948
1947
1948
1947-1948
1946-1948
1943-1945
1948
1948
1948
1801-1892 (prepared); 1946 (element replaced)
1839 (original); circa 1988 (replica)
circa 1947
1947
1903 (original); 1982 (model)
circa 1945
1945-1946
1947
1943
1944
4000-2001 BCE
1945
1948
1990-95
1945
1947
1944
1943
1947
circa 1945