Home › Authors › J. Douglas Guy 👤 J. Douglas Guy 5 books Books by J. Douglas Guy Vorsprung, Enhanced 2015 Custom Vorsprung : a Communica Custom Vorsprung : a Communicative Introduction to German Language and Culture 2014 Bundle : Vorsprung 2013 Vorsprung Student Activities Manual 2013 Vorsprung : A Communicative Introduction To German Language And Culture 2007