Columbia subject headings:
Harvard subject headings:
Employee motivation--Germany.
Industrial sociology--Germany.
Vocational qualifications--Germany.
Work--Psychological aspects
Youth--Employment--Germany
Youth--Job stress--Germany.
Princeton subject headings:
Employee motivation--Germany.
Industrial sociology--Germany.
Vocational qualifications--Germany.
Work--Psychological aspects.
Youth--Employment--Germany.
Youth--Job stress--Germany.