Zemach, Dorothy E. Open mind:beginner students book premium pack. Pre A1 / Dorothy E. Zemach and Mariela Gil Vierma - 1a ed. - Thailand: Macmillan Education, 2014 . - 88 p. : il. col.; 29 cm. ISBN: 9780230458154 Subjects--Topical Terms: INGLESENSEÑANZA DE INGLES Dewey Class. No.: 428