Delta Business Communication Skills: Using Social Media B1-B2, Coursebook with Audio CD, Delta Publishing by Klett, David King, Louise Pile, Susan Lowe,ELT: English for business,ELT: English for specific purposes, Coursebook with Audio CD, Englisch, Hochschule, Lehrwerke, VHS,, DELTA Business Communication Skills, Germany, en-GBhttps://www.klett-sprachen.deCoursebook with Audio CD, Englisch, Hochschule, Lehrwerke, VHS, [BLURB],[CITY],,books, ebooks, biblet, Book2look