Title: Exposiciones internacionales y urbanismo
Subjects: Sustainable development, Exhibitions, Water, City planning, Urban renewal, History, Buildings, structures, Expo (International Exhibitions Bureau) (2008 : Zaragoza, Spain) http://id.loc.gov/authorities/names/n2008056413, Guidebooks
Places: Spain, Zaragoza, Zaragoza (Spain)
Time periods: 19th century, 20th century