Population aging in Sub-Saharan Africa : demographic dimensions 2006 / U.S. Department of Commerce, Economics and Statistics Administration, U.S. Census Bureau.
Includes bibliographical references (pages 23-24).
Form
Also available via Internet from the U.S. Census Bureau web site. Address as of 10/11/07: http://www.census.gov/prod/2007pubs/p95-07-1.pdf; current access available via PURL.