Originally published in English in 2014 under title: A mousy mess.
"¡Con actividades divertidas!"--Page 4 of cover.
Summary
Alberto the mouse and his big sister, Wanda, have fun in the playroom of the Casa de la Gente where they live, then must quickly sort and return everything to its proper place before the people return.
Note
Description based on online resource; title from PDF title page (Lerner, viewed May 12, 2020).