Webgrafia



https://ca.wikipedia.org/wiki/Castell_de_Pallej%C3%A0

 http://www.palleja.cat/ajpalleja/cas/?tit=El%20Castell&ref=castell


http://fichas.infojardin.com/arbustos/pittosporum-tobira-pitosporo-azahar-de-china.htm


http://smartcity.bcn.cat/


http://www.smartcityexpo.com/ca/


https://ca.wikipedia.org/wiki/Activitat_f%C3%ADsica


https://ca.wikipedia.org/wiki/Energia_renovable


https://www.youtube.com/results?search_query=que+es+una+smart+city


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