Columbia subject headings:
Arbitration, Industrial--United States.
Railroad law--United States.
Railroads--United States--Employees.
United States. National Railroad Adjustment Board.
Harvard subject headings:
Arbitration, Industrial--United States
Railroad law--United States.
Railroads--United States--Employees
United States. National Railroad Adjustment Board.
Princeton subject headings:
Arbitration, Industrial--United States.
Railroad law--United States.
Railroads--United States--Employees.
United States. National Railroad Adjustment Board