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1PES impact and leakages over several cohorts the case of PSA-H in Yucatan, Mexico PES impact and leakages over several cohorts the case of PSA-H in Yucatan, Mexicoby Le Velly, Gwenole autor/a, Sauquet, Alexandre autor/a, Cortina Villar, Héctor Sergio 1960- Doctor autor/a 5463Texto bibliotecaECOSUR