Columbia subject headings:
Whitehead, Alfred North, 1861-1947.
Whitehead, Alfred North, 1861-1947. Process and reality.
Harvard subject headings:
Whitehead, Alfred North, 1861-1947
Whitehead, Alfred North, 1861-1947. Process and reality
Princeton subject headings:
Whitehead, Alfred North, 1861-1947.
Whitehead, Alfred North, 1861-1947. Process and reality