Trends and characteristics of international migration since 1950.

Sonraí bibleagrafaíochta
Údar corparáideach:	United Nations. Dept. of Economic and Social Affairs
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	New York United Nations 1979.
Sraith:	Demographic [i.e. Population] studies no. 64
Ábhair:	Emigration and immigration > Statistics.