21
Published 2006
Federal Office of Public Health

22
by Ouedraogo, Isidore
Published 2012
innsbruck university press

23
by Stalder, Felix
Published 2012
innsbruck university press

24
Published 2014
Federal Office for Social Security

25
Published 2012
OECD Publishing

26
Published 2014
OECD Publishing

27
Published 2017
OECD Publishing

28
Published 2015
OECD Publishing

29
Published 2017
OECD Publishing

30
Published 2013
OECD Publishing

31
Published 2017
OECD Publishing
Cover Image

32
by Freier, Carolin
Published 2016
transcript Verlag
Cover Image

33
by Leisering, Lutz
Published 2006
transcript Verlag
Cover Image

34
Published 2010
transcript Verlag
Cover Image

35
by Lorenz, Stephan
Published 2012
transcript Verlag
Cover Image

36
by Meyer, Hendrik
Published 2013
transcript Verlag
Cover Image

37
by Brütt, Christian
Published 2011
transcript Verlag
Cover Image

38
by Grell, Britta
Published 2008
transcript Verlag

39
Published 2017
OECD Publishing

40
Published 2013
German Youth Institute