Columbia subject headings:
Harvard subject headings:
Agriculture--Germany--Prussia--History--Exhibitions.
Agriculture--Silesia--History--Exhibitions.
Frederick II, King of Prussia, 1712-1786--Exhibitions.
Frederick II, King of Prussia, 1712-1786.
Germany--Kings and rulers--Biography.
Potatoes--Germany--Prussia--History--Exhibitions.
Potatoes--Germany--Prussia--History.
Potatoes--Harvesting--Germany--Prussia--History--Exhibitions.
Potatoes--Harvesting--Silesia--History--Exhibitions.
Potatoes--Silesia--History--Exhibitions.
Potatoes--Social aspects.
Princeton subject headings:
Agriculture--Germany--Prussia--History--Exhibitions.
Agriculture--Silesia--History--Exhibitions.
Frederick II, King of Prussia, 1712-1786--Exhibitions.
Germany--Kings and rulers--Biography.
Potatoes--Germany--Prussia--History--Exhibitions.
Potatoes--Harvesting--Germany--Prussia--History--Exhibitions.
Potatoes--Harvesting--Silesia--History--Exhibitions.
Potatoes--Silesia--History--Exhibitions.