Customs tariff and regulations for ports in Porto Rico in possession of the United States.
APA Citation
United States. War Department. (1898). Customs tariff and regulations for ports in Porto Rico in possession of the United States. Washington,: Gov't print. off..
MLA Citation
United States. War Department. Customs Tariff And Regulations for Ports In Porto Rico In Possession of the United States. Washington,: Gov't print. off., 1898.
Warning: These citations may not always be complete (especially for serials).