Columbia subject headings:
Harvard subject headings:
Emigration and immigration--Congresses
Emigration and immigration--Economic aspects--Congresses.
Emigration and immigration--Social aspects--Congresses
Migration, Internal--Congresses
Population--Congresses
Princeton subject headings:
Case studies.
Demography--Case studies.
Emigration and immigration--Case studies.
Immigrants--Case studies.
Migration, Internal--Case studies.