摘要
Indices for continents,regions and theworld are computed by summing the coun-try aggregates,which for that purposeare converted into US dollars．The exchan-ge rates of national currencies for USdollars are those published by the Inter-national Monetary Fund,with the excep-tion of those of eastern European coun-
出处
《统计》
1985年第3期45-46,共2页
