Columbia subject headings:
Minorities--Civil rights--Congresses.
Minorities--Legal status, laws, etc.--Congresses.
Harvard subject headings:
Minorities--Civil rights
Minorities--Civil rights--Congresses.
Minorities--Legal status, laws, etc.
Minorities--Legal status, laws, etc.--Congresses.
Princeton subject headings:
Minorities--Civil rights--Congresses.
Minorities--Legal status, laws, etc.--Congresses.