00355nam a22001097a 450000500170000008200210001724501200003826000410015830000120019994200150021199900190022620250820113914.0  a330.90021 WOR.N0  aWorld Statistics in Brief : U N Statistical Pocket Book /b Department of International Economic and Social Affairs  aNew York: b United Nations, c1990.  aUWO5143  2ddccUN&WB  c750993d750993