Sonderlektionen und Übungen für die Entwicklung des Gedächtnisses und der Kraft der Konzentration.
Brussels, Belgium: Psychology Foundation, 1926. First Edition. Softcover. Large Quarto. 16pp. Original printed wrappers. Some line drawings. Text in GERMAN. A tract on the development of memory and concentration. Top corner bumped, causing creasing a long top edge. Otherwise a VG copy of an unusual booklet. Item #50124
Price: $35.00
See all items by Elmer E. KNOWLES