LINK
Motori di Ricerca - Search Engines - Motores de Busca - Mouters de Recerche
Scienze - Science - Ciencias - Sciences
Tetramorium - Italian Ants - Web Site
Agrolinker - A site on Agricolture
Moths and Butterflies of Europe and North Africa
Vari - Various - Varios - Variés
giuseppepetralia.interfree.it - Deep Sky Images
www.youtube.com/user/marioptr/videos - Original songs, covers and karaoke by Mario Petralia
www.freelang.net - free dictionaries
www.lucianabartolini.net - Macro Photos of Insects
The W3C Markup Validation Service