New York: Clarkson N. Potter, (1981). First Edition, First Printing. Hardcover. Short quarto. 7.25 x 9.25 in. xii, 148 pp. With black & white reproductions of drawings and diagrams. Fine in original green cloth-backed green boards and a fine, colorful pictorial dust jacket. Item #33182
Signed by Martin Gardner on the title page and scarce thus.