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Tariffs, smuggling and economic welfare : a spatial analysis of Nigerian rice policy options
Johnson, Michael, (2017)
The Upstream Tariff Simulator (UTAS) : a tool to assess the impact of tariff reform on input costs and effective protection across sectors
Eberhard-Ruiz, Andreas, (2020)
A history of U.S. tariffs : quantifying strategic trade-offs in tariff policy design
Martínez-García, Enrique, (2025)
Fundamental Principles of Parcel-Post Administration
Roper, Daniel C., (1914)
Cotton ginning (Crops of 1899 to 1902, inclusive)
Roper, Daniel C., (1903)
Tariff handbook : tariff data compiled from official sources and statistical analysis of the tariff act of 1909 : prepared for the use of the Ways and Means Committee
Roper, Daniel C., (1913)