Columbia subject headings:
Harvard subject headings:
Agriculture--Spain--Zaragoza (Province)--History--Sources.
Casa de Ganaderos de Zaragoza--History--Sources.
Zaragoza (Spain : Province)--History--Sources.
Zaragoza (Spain). Corte del Justicia de Ganaderos--History--Sources.
Princeton subject headings:
Agriculture--Spain--Zaragoza (Province)--History--Sources.
Casa de Ganaderos de Zaragoza--History--Sources.
Zaragoza (Spain : Province)--History--Sources.
Zaragoza (Spain). Corte del Justicia de Ganaderos