Bulgaria: Open Doors By Books / Paperback History: World › Travel & Exploration Publisher: Sofia, January 1992 Price $13.12 Free Shipping Send to a friend Used - Very Good Very Good condition. (Bulgaria, tourism, description and travel ) 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. $13.12 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.