revista
WELL CAN METHOD SUBSTITUTE FOR DATA, How?: FIVE EXPERIMENTS IN POVERTY ANALYSIS / RAVALLION, Martin .- Washington: BM. World Bank , 1996 .- 1vol; 22pp; 25cms .- ISSN 0257-3032.-
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Signatura: WORLD BANK RESEARCH OBSERVER, The, Nº2 (1996) 199pp-221pp ( revista )