Columbia subject headings:
Harvard subject headings:
Manners and customs--History--20th century.
Mass media--Social aspects--History--20th century.
Material culture--History--20th century.
Social change--History--20th century.
Princeton subject headings:
Manners and customs--History--20th century.
Mass media--Social aspects--History--20th century.
Material culture--History--20th century.
Social change--History--20th century.