Columbia subject headings:
Harvard subject headings:
Gerontology.
Older people--History.
Older people--Legal status, laws, etc.
Schöpffer, Theodosius, active 17th century-18th century. Gerontologia seu tractatus de jure senum.
Princeton subject headings:
Gerontology.
Older people--History.
Older people--Legal status, laws, etc.
Schöpffer, Theodosius. Gerontologia seu tractatus de jure senum.