Markus Osterwalder
Creator • 1947-07-06 • Schlieren, Switzerland
Markus Osterwalder is a swiss author of children books.
Known For
From Nerdspin
Filmography
- 2014★ 6.0
Creator • 1947-07-06 • Schlieren, Switzerland
Markus Osterwalder is a swiss author of children books.