Cambridge: Cambridge University Press, 1951. First Edition. 68 pp. 12mo. Light scuffing to dust jacket. Small tears at head and foot, browning to spine from sun, now in mylar cover. Red cloth covered boards with gold embossed titling to spine. Previous owner's name in ink on front pastedown, quite small. Clean within.
Discussion of causality in physics by the Nobel Laureate Erwin Schrödinger.