Focus on grammar : an integrated skills approach (Pearson, 2006)
La Biblioteca contiene: Student book: v.3, v.4, v.5 ; Workbook: v.2, v.4, v.5 --ISBN 0131474669 (v. 1 : student book), ISBN 0131899716 (v. 2 : student book ), ISBN 0131899848 (v. 3 : student book), ISBN 0131900080 (v. 4 : student book), ISBN 0131912739 (v. 5 : student book)--La mención de responsabilidad varía ligeramente en los volúmenes de Student book-- ISBN 0131899740 (v. 2 : workbook), ISBN 0131912356 (v.4 : workbook), ISBN 0131912771 : workbook)--Workbook, v.2 / Samuela Eckstut, Workbook, v.4 / Marjorie Fuchs, Margaret Bonner with Jane Curtis, Workbook, v.5 / Rachel Spack Koach with Keith S. Folse.