Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1946
1839 (original); circa 1988 (replica)
1938 and 1951
1947
1947
1946
1945
2000-100 BCE
1946
4000-2001 BCE
1945
circa 1945
1945-1946
1945
1947
1946
1946
1934; 1947
1945
1952-3
1947
1947
1946
circa 1946
circa 1947
1990-95
1903 (original); 1982 (model)
1946
1945
1955; 1830
1947
1947
1945-1947
1945
6000-5000BCE
1960-1979
1879 (1956)
1945
1798 (original); 1977 (model)
1935; 1958
1947
2050-1750 BCE
1946; 1946
1888; 1984
1990-96
1945
1947
1976; 1776
1962-05