The Secret of the Island, Reader + Delta Augmented, Delta Publishing by Klett, Kenneth L. Warner,ELT graded readers,ELT: learning material & coursework, A1, Englisch, Lektüre, Sekundarstufe I,, DELTA Readers: Crime and Thriller, Germany, en-GBhttps://www.klett-sprachen.deA1, Englisch, Lektüre, Sekundarstufe I, [BLURB],[CITY],,books, ebooks, biblet, Book2look