Columbia subject headings:
Migrant labor--Health and hygiene--Europe--Congresses.
Migrant labor--Medical care--Europe--Congresses.
Minorities--Health and hygiene--Europe--Congresses.
Minorities--Medical care--Europe--Congresses.
Harvard subject headings:
Migrant labor--Health and hygiene--Europe--Congresses.
Migrant labor--Medical care--Europe--Congresses.
Minorities--Health and hygiene--Europe--Congresses.
Minorities--Medical care--Europe--Congresses.
Princeton subject headings: