Obstáculos en el aprendizaje del concepto de respiración - Orrego Cardozo, Mary (Ciencias Básicas. Departamento de Física y Química) ; Dávila Correa, A. (Universidad Autónoma de Manizales (Colòmbia)) ; Tamayo Alzate, Óscar Eugenio (Universidad de Caldas)
 
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