Columbia subject headings:
Szczecin (Poland)--Commerce--History--19th century.
Szczecin (Poland)--Economic conditions.
Harvard subject headings:
Szczecin (Poland)--Commerce--History--19th century.
Szczecin (Poland)--Economic conditions.
Princeton subject headings:
Szczecin (Poland)--Commerce--History--19th century.
Szczecin (Poland)--Economic conditions.