Presentation

http://www.youtube.com/watch?v=y5kDB4GGwIg&list=UUOB85YEplM-jz4YVE0jH36g&index=2 ф2000; часть 1.
http://www.youtube.com/watch?v=VJ0sKHomQ9I&list=UUOB85YEplM-jz4YVE0jH36g&index=1 ф2000; часть 2