Columbia subject headings:
Harvard subject headings:
Cooperation--Germany--History.
Cooperation--History
Cooperative societies--Germany--History.
Cooperative societies--History.
Cooperative societies.
Schulze-Delitzsch, Hermann, 1808-1883.
Princeton subject headings:
Cooperation--Germany--History.
Cooperation--History.
Cooperative societies--Germany--History.
Cooperative societies--History.
Schulze-Delitzsch, Hermann, 1808-1883.