Aliguyon, Nathaniel A. Instructional material in language programs and policies in multilingual societies / Nathaniel A. Aliguyon. - [Bayombong, Nueva Vizcaya] : [Nueva Vizcaya State University] , 2026. - 64 leaves : colored illustrations ; 33 cm. + e-copy. Includes bibliographical references. Subjects--Topical Terms: Language policy—Multilingualism