Columbia subject headings:
Intergenerational relations--Europe--20th century.
Nineteen sixty-eight, A.D.
Social conflict--Europe--20th century.
Harvard subject headings:
Intergenerational relations--Europe--20th century.
Nineteen sixty-eight, A.D.
Social conflict--Europe--20th century.
Princeton subject headings:
Intergenerational relations--Europe--20th century.
Nineteen sixty-eight, A.D.
Social conflict--Europe--20th century.