Columbia subject headings:
Business ethics--Italy--History--16th century.
Commerce--Social aspects--Italy--History--16th century.
Di Negro, Giovanni Francesco--Correspondence.
Genoa (Italy)--Commerce--History--16th century.
Merchants--Italy--Genoa--Correspondence.
Harvard subject headings:
Business ethics--Italy--History--16th century.
Commerce--Social aspects--Italy--History--16th century.
Di Negro, Giovanni Francesco--Correspondence.
Genoa (Italy)--Commerce--History--16th century.
Merchants--Italy--Genoa--Correspondence.
Princeton subject headings:
Business ethics--Italy--History--16th century.
Commerce--Social aspects--Italy--History--16th century.
Di Negro, Giovanni Francesco--Correspondence.
Genoa (Italy)--Commerce--History--16th century.
Merchants--Italy--Genoa--Correspondence.