Columbia subject headings:
Magnus Birgersson Ladulås, King of Sweden, 1240-1290.
Valdemar, King of Sweden, approximately 1230-1302.
Harvard subject headings:
Magnus Birgersson Ladulås, King of Sweden, 1240-1290.
Valdemar, King of Sweden, approximately 1230-1302.
Princeton subject headings:
Magnus Birgersson Ladulås, King of Sweden, 1240-1290.
Valdemar Birgersson, King of Sweden, approximately 1240-1302.