Soriano, Ivette Essential grammar and writing skills : school of lenguages. / Ivette Soriano, Mónica Pérez - 1st ed. - San Salvador, El Salvador : Universidad Don Bosco, 2016 - 77 p. : il. ; 28 cm. Subjects--Topical Terms: GRAMATICA--INGLESESCRITURAIDIOMA INGLES--ENSEÑANZA Dewey Class. No.: 428.2 / S714