Telecommunications map of the world. Produced by Petroleum Economist Ltd., London and TeleGeography, Inc., Washington D.C. in Association with ING Barings. Designed by Gregory C. Staple, Zachary M. Schrag & A. Malkin. (Copyright) The Petroleum Economist & TeleGeography, Inc. May 1996. (Cover title) Petroleum Economist; Telegeography, Inc. Ing Barings. Telecommunications map of the world ... (insets).