Columbia subject headings:
Social work with youth--Germany--Hamborn (Duisburg)
Unemployed--Germany--Hamborn (Duisburg)
Youth--Employment--Germany--Hamborn (Duisburg)
Harvard subject headings:
Social work with youth--Germany--Hamborn.
Unemployed--Germany--Hamborn.
Youth--Employment--Germany--Hamborn.
Princeton subject headings:
Social work with youth--Germany--Hamborn (Duisburg).
Unemployed--Germany--Hamborn (Duisburg).
Youth--Employment--Germany--Hamborn (Duisburg).