Columbia subject headings:
Malays (Asian people)--History.
Malays (Asian people)--Indonesia--Sumatra.
Malays (Asian people)--Politics and government.
Harvard subject headings:
Barus (Sumatera Utara, Indonesia)--Politics and government.
Sumatera Utara (Indonesia)--Ethnic relations.
Sumatera Utara (Indonesia)--Politics and government--Sources.
Princeton subject headings:
Barus (Kingdom)--Politics and government.
Sumatera Utara (Indonesia)--Ethnic relations.
Sumatera Utara (Indonesia)--Politics and government--Sources.