books.google.com.pk - For five millennia the tower building has been a symbol of human aspirations, status & power. This book surveys the many structural roles of the tower: as viewing platform, as wind tower & in more conventional expressions as residential or officebuilding, structures both monumental & functional. The...http://books.google.com.pk/books/about/Towers.html?hl=de&id=70FUAAAAMAAJ&utm_source=gb-gplus-shareTowers
