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Changes in the foreign trade and customs system, 1999 - 2001
Antonović, Ljiljana, (2001)
Harmonized system in developing countries
Weerth, Carsten, (2008)
The structure and function of the world customs organization
Weerth, Carsten, (2009)
Foreign exchange system
Komazec, Jeka, (1997)
Foreign trade system