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In page Raphael Lemkin:

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In 1937, Lemkin was appointed a member of the Polish mission to the 4th Congress on Criminal Law in Paris, where he also introduced the possibility of defending peace through criminal law. Among the most important of his works of that period are a compendium of Polish criminal fiscal law, Prawo karne skarbowe (1938) and a French-language work, La réglementation des paiements internationaux, regarding international trade law (1939).[citation needed]