Columbia subject headings:
Coffee growers--Brazil--Paraíba do Sul River Valley--Juvenile literature.
Paraíba do Sul River Valley (Brazil)--History--Juvenile literature.
Slavery--Brazil--Paraíba do Sul River Valley--Juvenile literature.
Harvard subject headings:
Coffee growers--Brazil--Paraíba do Sul River Valley--Juvenile literature.
Paraíba do Sul River Valley (Brazil)--History--Juvenile literature.
Slavery--Brazil--Paraíba do Sul River Valley--Juvenile literature.
Princeton subject headings:
Coffee growers--Brazil--Paraíba do Sul River Valley--Juvenile literature.
Paraíba do Sul River Valley (Brazil)--History--Juvenile literature.
Slavery--Brazil--Paraíba do Sul River Valley--Juvenile literature.