On Point Advanced English (C1), Advanced English. Student's Book + audios and videos, Delta Publishing by Klett, Ernst Klett Sprachen GmbH,ELT workbooks, practice books & exercises,ELT: learning material & coursework, DELTA, delta publishing, Englisch, English, General English,, On Point, Germany, en-GBhttps://www.klett-sprachen.deDELTA, delta publishing, Englisch, English, General English, [BLURB],[CITY],,books, ebooks, biblet, Book2look