Columbia subject headings:
Spain--History--Civil War, 1936-1939--Foreign public opinion, Welsh.
Spain--History--Civil War, 1936-1939--Participation, Welsh.
Harvard subject headings:
Public opinion--Wales.
Spain--History--Civil War, 1936-1939--Foreign public opinion--Welsh.
Spain--History--Civil War, 1936-1939--Participation, Welsh.
Welsh--Spain--History--20th century.
Princeton subject headings:
Spain--History--Civil War, 1936-1939--Foreign public opinion--Welsh.
Spain--History--Civil War, 1936-1939--Participation, Welsh.