Columbia subject headings:
Harvard subject headings:
Basic income--Germany--Congresses.
Economic assistance, Domestic--Germany--Congresses.
Income maintenance programs--Germany--Congresses.
Industrial sociology--Germany--Congresses.
Working poor--Germany--Congresses.
Princeton subject headings:
Basic income--Germany--Congresses.
Economic assistance, Domestic--Germany--Congresses.
Income maintenance programs--Germany--Congresses.
Industrial sociology--Germany--Congresses.
Working poor--Germany--Congresses.