<h4>LEZIONE 4 (Superficie e Pente - Descrittori stabilometrici spaziali)</h4>
<iframe src="//www.youtube.com/embed/NRLcOouMK3Q?rel=0" width="960" height="540" frameborder="0" allowfullscreen="allowfullscreen"></iframe>
<iframe src="//www.youtube.com/embed/NRLcOouMK3Q?rel=0" width="960" height="540" frameborder="0" allowfullscreen="allowfullscreen"></iframe>