E queste:
[IMG]http://i3.tinypic.com/6yocuc1.jpg[/IMG]
[IMG]http://i7.tinypic.com/6oexk3q.jpg[/IMG]
[IMG]http://i1.tinypic.com/6ly9w11.jpg[/IMG]
[IMG]http://i14.tinypic.com/71ovbf9.jpg[/IMG]
[IMG]http://i12.tinypic.com/6pjtoiu.jpg[/IMG]
[IMG]http://i12.tinypic.com/8ev0ug3.jpg[/IMG]
[IMG]http://i5.tinypic.com/6okf442.jpg[/IMG]
[IMG]http://i3.tinypic.com/7xxqcyc.jpg[/IMG]
[IMG]http://i5.tinypic.com/7316fj4.jpg[/IMG]
[IMG]http://i12.tinypic.com/8bglst2.jpg[/IMG]
[IMG]http://i8.tinypic.com/8eufoxw.jpg[/IMG]
[IMG]http://i15.tinypic.com/6u9qqgn.jpg[/IMG]
[IMG]http://i13.tinypic.com/870lg0k.jpg[/IMG]
[IMG]http://i6.tinypic.com/6yd9l3b.jpg[/IMG]
[IMG]http://i18.tinypic.com/6u8kmq1.jpg[/IMG]
immagini inserite a scopo didattico e discussione