United States. Bureau of Labor Statistics.
Compensation Expenditures and Payroll Hours: Water Transportation, 1964 : Bulletin of the United States Bureau of Labor Statistics, No. 1577 ,
Washington, D.C:
U.S. G.P.O.,
March 1968, https://fraser.stlouisfed.org/title/4681,
accessed on March 21, 2025.
@FedFRASER