00494cam a2200109 i 450005000150000010000230001524500490003826001630008730000130025049000310026350000900029400aHB884 19781 aWolfson, Margaret.10aChanging approaches to population problems /  aParis :bDevelopment Centre of the Organisation for Economic Co-operation and Development ;a[Washington, D.C. :bPublications and Information Center],c1978.  a193 p. ;1 aDevelopment Centre studies  aIssued also in French under title: Nouvelles approches aux problèmes de population.