Columbia subject headings:
Jan II Kazimierz, King of Poland, 1609-1672.
Poland--History--John II Casimir, 1648-1668.
Poland--Kings and rulers--Biography.
Harvard subject headings:
Jan II Kazimierz, King of Poland, 1609-1672.
Poland--History--John II Casimir, 1648-1668
Poland--Kings and rulers--Biography
Princeton subject headings:
Jan II Kazimierz, King of Poland, 1609-1672.
Poland--History--John II Casimir, 1648-1668.
Poland--Kings and rulers--Biography.