Istake, Márcia and Guilhoto, Joaquim José Martins (2007): Comércio externo do Brasil e suas macrorregiões: um teste do teorema de Heckscher-Ohlin.
Guilhoto, Joaquim José Martins and Barros, Alexandre L. Mendonça de and Marjotta-Maistro, Marta C. and Istake, Márcia (2002): Mechanization process of the sugar cane harvest and its direct and indirect impact over the employment in Brazil and in its 5 macro regions.
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