De Strijd om de Logica By Berg, I. J. M. van den Books / Paperback Social Science › Psychology & Psychiatry Publisher: Dekker & Van de Vegt, January 1935 Price $34.49 Free Shipping Send to a friend Collectible - Good Signed Signed Copy Collectible - Good. Signed by author on a postcard laid in. Dutch. Some writing on front cover and inside. (logic, cognitive psychology, books in Dutch) $34.49 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.