Columbia subject headings:
Harvard subject headings:
Castilla y León (Spain)--Commerce--History.
Fairs--Spain--Castilla y León--History.
Markets--Spain--Castilla y León--History.
Princeton subject headings:
Castile (Spain)--Commerce--History.
Fairs--Spain--Castile--History.
Fairs--Spain--León--History.
León (Spain)--Commerce--History.
Markets--Spain--Castile--History.
Markets--Spain--León--History.