Columbia subject headings:
Employers' liability--United States.
Merchant mariners--Legal status, laws, etc.--United States.
Stevedores--United States.
Workers' compensation--United States.
Harvard subject headings:
Employers' liability--United States.
Merchant mariners--Legal status, laws, etc.--United States
Stevedores--United States.
Workers' compensation--United States.
Princeton subject headings: