Columbia subject headings:
Harvard subject headings:
Feudalism--Spain--Burgos (Province)--History.
Land tenure--Spain--Burgos (Province)--History.
Libro becerro de las behetrías.
Rent--Spain--Burgos (Province)--History.
Princeton subject headings:
Burgos (Spain : Province)--Politics and government--History.
Feudalism--Spain--Burgos (Province).
Land tenure--Spain--Burgos (Province)--History.
Libro becerro de las behetrías.