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First published in Belgium in 2014 byCities AllianceRue Royale, 941000 Brussels, BelgiumCopyright © Cities Alliance 2014The right of Brian H. Roberts to be identified as the Author of this text has been asserted inaccordance with the Copyright, Designs and Patents Act of 1988.All rights reserved. No part of this book may be reproduced in any form or by any electronicor mechanical means, including information storage and retrieval systems, withoutpermission in writing from the publisher, except by a reviewer who may quote brief passagesin a review.Supervision and coordination Rene Peter Hohmann, Cities Alliance SecretariatTechnical support Florence Lozet, Cities Alliance SecretariatProduced by Bookworx, LondonEditor Jo Godfrey WoodDesigner Peggy SadlerProofreader Charlotte ColeIndexer Marie LorimerA CIP record for this book is available from the British LibraryISBN Number/EAN: 978-9-0822617-1-4Legal depot number: D/2014/13.481/2Please cite this publication as:Roberts (2014), Managing Systems of Secondary Cities, Cities Alliance/UNOPS, Brussels.Contributions and peer reviewsWe would like to sincerely thank the following people andpartners for their valuable contributions and inspiration inthe peer review process: Almut Nagel (BMZ), Angelo Baglio(EC/DEVCO B2), Josep Roig (UCLG), Raf Tuts (UN-Habitat),Laura Petrella (UN-Habitat), Themba Phakati (UN-Habitat),Chris Heymans (World Bank), Christine Kessides (World BankInstitute).Disclaimer:The findings, analysis and policyrecommendations of this publicationare those of the author alone and donot represent the views of the UnitedNations, UNOPS and do not reflectthe policies or viewpoints of the CitiesAlliance Secretariat or its members.Cover maps: Percentage of urban population andagglomerations by size class (Map 1 to 4, from1960 to 2025). © United Nations, department ofEconomic and Social Affairs, Population Division:World Urbanization Prospects, the 2011 Revision,New-York, 2012.“The designations employed and the presentationof material on the maps do not imply theexpression of any opinion whatsoever on the partof Cities Alliance/UNOPS concerning the legalstatus of any country, territory, city or area or of itsauthorities, or concerning the delimitation of itsfrontiers or boundaries.”