Columbia subject headings:
Picardy (France)--Imprints.
Picardy (France)--Intellectual life.
Publishers and publishing--France--Picardy--Directories.
Publishers and publishing--France--Picardy--History.
Harvard subject headings:
Picardy (France)--Imprints.
Picardy (France)--Intellectual life.
Publishers and publishing--France--Picardy--Directories.
Publishers and publishing--France--Picardy--History.
Princeton subject headings: