@book{57277,
	author = {Portugal. Minister of states' office},
	title = {the free circulation of goods and the system of inter-regional payments in the portuguese area},
	publisher = {Portugal. Minister of states' office},
	year = {1961},
	address = {Portugal},
	note = {study of the fusion of markets and integration between Portugal's paper and its overseas provinces, covering obstacles to trade}
}