http://digitalnatura.org/details.php?image_id=2640 Mon, 13 Apr 2026 01:29:07 GMT http://digitalnatura.org/data/thumbnails/8/Niu_vespes-reenquadrada-070506.jpg http://digitalnatura.org/details.php?image_id=2640 http://digitalnatura.org/details.php?image_id=2640#comment3501 Sun, 14 May 2006 17:58:35 GMT DigitalNatura.Org - Geometria de les cel.les d'un niu de vespes http://digitalnatura.org/details.php?image_id=2640#comment3501