Columbia subject headings:
Grant, George Parkin, 1918-1988.
Philosophy and civilization.
Philosophy, Canadian--20th century.
Harvard subject headings:
Grant, George Parkin, 1918---Congresses.
Grant, George Parkin, 1918-1988--Congresses.
Philosophy and civilization--Congresses
Philosophy, Canadian--20th century--Congresses.
Princeton subject headings:
Grant, George Parkin, 1918-1988.
Philosophy and civilization.
Philosophy, Canadian--20th century.