Essays on Wittgenstein's Tractatus By Edited by: Copi, Irving and Beard, Robert Books / Hardcover Social Science › Philosophy Publisher: Hafner Press, Price $30.84 Free Shipping Send to a friend Used - Very Good Very Good condition. No Dust Jacket (Philosophy, Logic, Language) A copy that may have a few cosmetic defects. May also contain a few markings such as an owner’s name, short gifter’s inscription or light stamp. $30.84 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.