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Using different null hypotheses to test for seasonal unit roots in economic time series Sansó, Andreu - Aguirre, Antonio
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2.
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Nutrición y rendimiento escolar: ¿Es posible mostrar una relación causal usando datos de corte transversal?, Nutrition and education in childhood: is it possible to show a causal relationship using cross-section data? Rabassa, Mariano
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