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Comparing international trade data and product and national characteristics data for the analysis of trade models
Maskus, Keith E., (1989)
A guide to Direction of trade statistics
(1993)
World trade flows, 1970-1992, with production and tariff data
Feenstra, Robert C., (1997)
Canadian iron and steel industry and trade
Phoebus, Gladys Edith, (1924)