@book{57446,
	author = {Villiger, Mark Eugen.},
	title = {Customary international law and treaties},
	publisher = {M. Nijhoff},
	year = {1985.},
	series = {Developments in international law},
	address = {Dordrecht},
	note = {Previously classified under : JX 4165 .V55 1985}
}