Columbia subject headings:
Harvard subject headings:
Disabilities--History--Congresses.
Disability studies--History--Congresses.
People with disabilities--History--Congresses.
People with disabilities--Medical care--History--Congresses.
Princeton subject headings:
Disabilities--History--Congresses.
Disability studies--History--Congresses.
People with disabilities--History--Congresses.
People with disabilities--Medical care--History--Congresses.