Trade paperback. Two volumes bound as one, being vol. II of the four volume reprint by Dover. xiii, 380 and xiii, 336 pages respectively. Translated from the third German edition. First published by Dover in 1961 this represents an unabridged republication of the English translation. New edition. No previous ownership marks. No spine crease. Minor age soiling to rear cover. A clean, square, unmarked copy with no underlining, highlighting or marking internally. Near very good.