Text ( visual ) : unmediated Railways : operation and economic impact. -- Abingdon : Routledge , 2016, c2012. -- 408 p. ; 24 cm. -- (Britain and Africa series / series editor: David Sunderland ; advisory editor: Godfrey N. Uzoigwe ; . Communications in Africa, 1880-1939 / general editor, David Sunderland ; advisory editor, Godfrey N. Uzoigwe ; v. 4). -- First published: Pickering & Chatto, 2012 ; ISBN for the subseries "Communications in Africa, 1880-1939": 9781848930643 ; Includes bibliographical references. -- ISBN 9781138751996 ; (BB27956653) ; https://ci.nii.ac.jp/ncid/BB27956653 Author Heading(s): Sunderland, David ; Uzoigwe, G. N.