DEVELOPMENT OF TALL BUILDINGS IN BARCELONA Cavero Lapuerta, Enrique Garau Bezzina, Pere Pau Padilla Lopez, Alberto Tresserras Pujol-Xicoy, JoanCavero Lapuerta, Enrique Garau Bezzina, Pere Pau Padilla López, Alberto Tresserras Pujol-Xicoy, Joan