Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

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• Performing a fuzzy search may retrieve terms with similar spellings: free ((((imagenes OR (mament OR sagan)) OR lentes) OR (imament OR mauge)) OR (age OR gen))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "free ((((imagenes OR (mament OR sagan)) OR lentes) OR (imament OR mauge)) OR (age OR gen))".
• Adding a wildcard symbol may retrieve word variants: free ((((imagenes OR (mament OR sagan)) OR lentes) OR (imament OR mauge)) OR (age OR gen))*.