Columbia subject headings:
Brandenburg (Germany : State)--History--12th century.
Jaksa z Kopanicy, active 12th century.
Princes--Germany--12th century.
Harvard subject headings:
Brandenburg (Germany : State)--Kings and rulers.
Brandenburg (Germany)--History--12th century.
Brandenburg (Germany)--History.
Jaksa z Kopanicy, active 12th century
Princes--Germany--12th century--Biography.
Princes--Germany--Biography
Princeton subject headings:
Brandenburg (Germany)--History.
Jaksa z Kopanicy, active 12th century.
Princes--Germany--Biography.