Columbia subject headings:
Book industries and trade--Spain--Societies, etc.--History--18th century.
Booksellers and bookselling--Spain--Societies, etc.--History--18th century.
Printing--Spain--Societies, etc.--History--18th century.
Real Compañía de Impresores y Libreros del Reino (Spain)--History.
Harvard subject headings:
Book industries and trade--Spain--Societies, etc.--History--18th century.
Booksellers and bookselling--Spain--Societies, etc.--History--18th century.
Printing--Spain--Societies, etc.--History--18th century.
Real Compañía de Impresores y Libreros del Reino (Spain)--History.
Princeton subject headings:
Booksellers and bookselling--Spain.
Printers--Spain.
Real Compañía de Impresores y Libreros del Reino.