A European experiment in cooperation in the social sciences : ten years activities at the Vienna Centre /

od Petrella, Riccardo., Schaff, Adam, 1913-2006.
Izdano 1974

L'Europe en mutation /

od Godet, Michel., Ruyssen, Olivier., Petrella, Riccardo.
Izdano 1980

Utopias and realities of urban sustainable development : new alliance between economy, environment and democracy for small and medium-sized cities : conference proceedings, Turin-B...

Izdano 1997