Columbia subject headings:
Harvard subject headings:
Automobile industry and trade--Canada--History--20th century.
Automobile industry and trade--United States--History--20th century.
Automobile industry workers--Canada--Social conditions--20th century.
Automobile industry workers--United States--Social conditions--20th century.
Violence in the workplace--Social aspects--Canada--History--20th century.
Violence in the workplace--Social aspects--United States--History--20th century.
Violence--Social aspects--Canada--History--20th century.
Violence--Social aspects--United States--History--20th century.
Princeton subject headings:
Automobile industry and trade--Canada--History--20th century.
Automobile industry and trade--United States--History--20th century.
Automobile industry workers--Canada--Social conditions--20th century.
Automobile industry workers--United States--Social conditions--20th century.
Violence in the workplace--Social aspects--Canada--History--20th century.
Violence in the workplace--Social aspects--United States--History--20th century.
Violence--Social aspects--Canada--History--20th century.
Violence--Social aspects--United States--History--20th century.