Columbia subject headings:
Harvard subject headings:
Banks and banking, Cooperative--Congresses.
Banks and banking, Cooperative--Germany--Congresses.
Cooperative societies--Congresses.
Cooperative societies--Germany--Congresses.
Credit unions--Congresses.
Credit unions--Germany--Congresses.
Princeton subject headings:
Banks and banking, Cooperative--Congresses.
Banks and banking, Cooperative--Germany--Congresses.
Cooperative societies--Germany--Congresses.
Credit unions--Congresses.
Credit unions--Germany--Congresses.