Warsaw 1935 [orig. 1934]. Author's edition. 13.5x18 cm, pp. 315, (4), publisher's hardcover, half cloth. Good condition (pieces after professional conservation, minor soiling of page edges).
First edition. The cover was designed by Teresa Roszkowska. Author on the book: This is a difficult book. I dedicate this difficult book to restless boys who find it hard to improve. One must want and strong and persevere. One must temper the will. One must be useful.