Columbia subject headings:
Land tenure--Brazil--Pernambuco.
Pernambuco (Brazil)--Rural conditions.
Sugar trade--Brazil--Pernambuco.
Harvard subject headings:
Land tenure--Brazil--Pernambuco.
Pernambuco (Brazil)--Rural conditions.
Sugar trade--Brazil--Pernambuco.
Princeton subject headings:
Land tenure--Pernambuco.
Pernambuco--Rural conditions.
Sugar trade--Pernambuco.