Columbia subject headings:
Harvard subject headings:
Belgium--Bibliography--Catalogs.
Belgium--Imprints--Catalogs.
Book industries and trade--Belgium--History--19th century.
Books--Pirated editions--Belgium--History--19th century--Catalogs.
Copyright infringement--Belgium--History--19th century.
Publishers and publishing--Belgium--History--19th century.
Princeton subject headings:
Belgium--Bibliography--Catalogs.
Belgium--Imprints--Catalogs.
Book industries and trade--Belgium--History--19th century.
Books--Pirated editions--Belgium--History--19th century--Catalogs.
Catalogs.
Publishers and publishing--Belgium--History--19th century.