referencia
TRENDS IN INTERNATIONAL DISTRIBUTION OF GROSS WORLD PRODUCT / ONU .- New York: ONU , 1993 .- 1vol; 336pp; 28cm .-(National Accounts Statistics, Series X; 18) .- ISBN 92-1-161346-9 .-
Signatura: REF-1/ONU/TRE/1993 ( referencia )
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