There has been data ("Pimsleur Twi Level 1 Lessons 1-5 MP3: Learn to Speak and Understand Twi with Pimsleur Language Programs (Pimsleur Digital)") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Sun Dec 22 08:22:32 2019, so the data displayed here has been removed .