@Article{ León_Carcelén_GARCÍA,

author = { Samuel P. León and María Carcelén -fraile and INMACULADA GARCÍA MARTÍNEZ } ,

title = { Development of Cognitive Abilities through the Abacus in Primary Education Students: A Randomized Controlled Clinical Trial },

journal = { Education Sciences },

year = { 2021 },

volume = { 83 },

pages = { - },

}