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9book bibliotecaUNESCO
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10book bibliotecaUNESCO
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11programme and meeting document bibliotecaUNESCO
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18Experimental design: procedures for the behavioral sciences Experimental design: procedures for the behavioral sciencesby Kirk, Roger E. autor/a
Published 1995Texto bibliotecaECOSUR -
19Digital revistaSCIELO
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20Texto bibliotecaUAAAN MX