[concept & layout: Pepin van Roojen [concept & layout: Pepin van Roojen]. [concept by Pepin van Roojen [concept and design:] Pepin van Roojen. [concept and series editor Pepin van Roojen [concept and series editor Pepin van Roojen] [concept & editor-in-chief, Pepin van Roojen [concept and series editor Pepin van Roojen]. [concept & editor-in-chief, Pepin van Roojen]. Concept & Cover Design by Roojen