Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945
1945
1945
1967
1967
1999
1987
1989
circa 2014
circa 2014
1998-1999
1998-1999
1953
1960
1953
1953
1920-1970
1993
1987
1960
1988-1998
1980-1989
1950-1958
1953
1993
1930-1940
1996
1986
1994
1986
1945
1972-1979
circa 1990
2009-2010
1968
1988
1993-1996
1988