Sui confini della scienza della natura ; I sette enigmi del mondo By Emil Du Bois-Reymond Books / Paperback Social Science › Philosophy Publisher: Edizioni Athena, January 1928 Price $25.04 Free Shipping Send to a friend Used - Acceptable Acceptable condition. Italian edition. Spine split. Reading copy only. (Scientific philosophy) $25.04 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.