Columbia subject headings:
Poor--Japan--Osaka--History--20th century.
Poor--Japan--Osaka--History--21st century.
Public welfare--Japan--Osaka--20th century.
Public welfare--Japan--Osaka--21st century.
Slums--Japan--Osaka--History--20th century.
Slums--Japan--Osaka--History--21st century.
Harvard subject headings:
Poor--Japan--Osaka.
Public welfare--Japan--Osaka.
Slums--Japan--Osaka.
Princeton subject headings:
Poor--Japan--Osaka.
Public welfare--Japan--Osaka.
Slums--Japan--Osaka.