Columbia subject headings:
Barrier-free design--Law and legislation--United States.
Discrimination against people with disabilities--Law and legislation--United States.
Older people--Legal status, laws, etc.--United States.
People with disabilities--Legal status, laws, etc.--United States.
Harvard subject headings:
Discrimination against people with disabilities--Law and legislation--United States.
Older people--Legal status, laws, etc.--United States.
People with disabilities--Legal status, laws, etc.--United States
Princeton subject headings: