Columbia subject headings:
Black people--Portugal--Lisbon--History--16th century.
Slave trade--Portugal--Lisbon--History--16th century.
Slavery--Portugal--Lisbon--History--16th century.
Slaves--Portugal--Lisbon--History--16th century.
Social structure--Portugal--Lisbon--History--16th century.
Harvard subject headings:
Black people--Portugal--Lisbon--History--16th century.
Slave trade--Portugal--Lisbon--History--16th century.
Slavery--Portugal--Lisbon--History--16th century.
Slaves--Portugal--Lisbon--History--16th century.
Social structure--Portugal--Lisbon--History--16th century.
Princeton subject headings:
Black people--Portugal--Lisbon--History--16th century.
Slave trade--Portugal--Lisbon--History--16th century.
Slavery--Portugal--Lisbon--History--16th century.
Slaves--Portugal--Lisbon--History--16th century.
Social structure--Portugal--Lisbon--History--16th century.