World population ageing 2009. - New York, N.Y. : United Nations, Dept. of Economic and Social Af fairs, Population Division, 2010. - liv, 73 p. : ill., maps ; 28 cm. + 1 CD-ROM (4 3/4 in.) "ST/ESA/SER.A/295." "United Nations publication sales no. E.10.XIII.5"--T.p. verso. Includes bibliographical references (p. 51-55). System requirements not included. ISBN: 9789211514681 9211514681 LCCN: 2010-474084 Subjects--Topical Terms: Older people--Statistics.Age distribution (Demography)--Statistics.Population--Statistics