Buch(gedruckt)#11930Prevention of smuggling of intoxicating liquors: Convention between the United States of America and Poland. Signed at Washington, June 19, 1930In: Treaty series no. 821USA; PolenUSA; PolenBestellen über Verfügbarkeit
Buch(gedruckt)#21925The Polish oil industry: Present situation and statisticsUnger, Stanisław; Union of Mineral Oil Producers and Refiners in PolandUnger, Stanisław; Union of Mineral Oil Producers and Refiners in PolandBestellen über Verfügbarkeit