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A new model of world trade
Samuelson, Lee, (1973)
Statistical methods in research and production : with special reference to the chemical industry
Davies, Owen L., (1949)
Measuring changes in intra-industry competitiveness
Menzler-Hokkanen, Ingeborg, (1986)
A short manual on sampling
(1960)
(1973)
Computer programmes for sample designs
(1970)