Tuesday, 21 March 2017
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Sudoku Ripeto and Custom Sudoku are featured in the Gift Exchange Book following the Gathering for Gardner 13th Conference, that was held ... -
Dentro de las actividades de la Semana de la Ciencia y la Innovación 2021, el próximo 11 de Noviembre a las 7 de la tarde, en la Escuela Sup...
