books.google.com.pk - Architecture, which can be understood in its most basic sense as a form of enclosure created with an aesthetic intent, first made its appearance in the Prehistoric Age. From its earliest developments, architecture changed over time and in different cultures in response to changing cultural needs, aesthetic...http://books.google.com.pk/books/about/The_A_to_Z_of_Architecture.html?id=diPlsp8g5NsC&utm_source=gb-gplus-shareThe A to Z of Architecture