"English language Business English." . . "Telephoning and Teleconferencing Skills." . . "Telekonferenz." . . "Fifty ways." . . "Englisch." . . . . . . . . . . . . "Telephoning and teleconferencing skills" . "Fifty ways to improve your telephoning and teleconferencing skills : ... without too much effort" . . . . "Fifty ways to improve your telephoning and teleconferencing skills : ... without too much effort!" . . . "Improve your telephoning and teleconferencing skills" . . "50 ways to improve your telephoning and teleconferencing skills" . . "Aufgabensammlung" . . "Fifty ways to improve your Telephoning and Teleconferencing Skills" . "Fifty ways to improve your telephoning and teleconferencing skills ... without too much effort!" . . "Telephone in business." . . "Telefonieren." . . . . "Telephone etiquette." . .