Columbia subject headings:
Harvard subject headings:
Communists--Great Britain--Biography
Communists--Scotland--Biography.
Maclean, John, 1879-1923
Scotland--History--Autonomy and independence movements.
Princeton subject headings:
Communists--Great Britain--Biography.
Communists--Scotland--Biography.
Maclean, John, 1879-1923.
Scotland--History--Autonomy and independence movements.