Sunspots in Action.
New York: The Ronald Press Company, 1947. Hardcover. First Edition. xiv, 252 pp. 8vo. Wear and scuffing to dust jacket, small chiops at edges, minor fading to spine, now in mylar cover. Dark blue cloth boards with gold embossed titling to cover and spine. Previous owner's name in ink on front pastedown. Clean within. Very Good / Good. More