No biography available for Jan Josef Liefers.
2023
2010
2017
1994
2009
1997
1999
2005
2024
2022
1998
2012
2014
2015
2012
2008
2011
2013
2013
1999
2015
1997
2017
2006
2016
2000
2009
2006
2019
2007
2003
1997
2025
2001
1995
2002
1997
2025
1998
2003
2015
2003
2007
1998
1997
2012
2005
2002
2017
1997
2016
2018
2018
1991
2015
1986
2007
2017
1991
1989
1990
1998
2011
1970
1991
2008
1992
1995
1997
1979
1976
1998
1992
1948
1996
1999
1997
1981
2015
1984
1974
1994
2003
2001
1951
1999
1990
2007
2015
1964
1979
1997
1998
1993
2016
2005
1989
2002
1994
1994
2003
2011
1998
1995
1994
2008
1998
2000
2017
2003
2012
2006
2018
2016
2021
2006
2002
2008
1999
2003
2015
2018
2012
1998
2002
2005
2021
2009
2024
1995
2020
2020
2014
2006
2009
2015
2022
2020
2000