Designing social innovationInternational Association for People-Environment Studies. Conference, Bob Martens, Alexander G. Keul · First published 2005Open the Tome
Ehrenamt und LeidenschaftUlrike Kammerhofer-Aggermann, Andrea Weiss, Alexander G. Keul, Salzburger Landesinstitut für Volkskunde · First published 2002Open the Tome
