RINGRAZIAMENTI
http://questgarden.com/106/20/3/100729140356/index.htm
www.toiranogrotte.it http://www.maestrasabry.it/storia-classe-terza.html
http://www.scintilena.com/video-you-tube-istituto-luce-scoperta-delle-grotte-di-toirano-1950/07/08/
https://www.youtube.com/watch?v=WJPQbEEWfWk
https://www.youtube.com/watch?v=KDoIF694Eo4
http://www.lacartellabella.com/Il%20mito/mito%20dell%27ulivo.html
https://www.youtube.com/watch?v=0ql0sGAXhAE
http://www.latecadidattica.it/ http://www.parconazionale5terre.it
http://www.eniscuola.net/assets/3421/grotte.pdf
http://www.ssi.speleo.it/index.php?option=com_oziogallery2&view=04carousel&Itemid=204
http://www.museoarcheologicodelfinale.it/
www.ciaomaestra.it/public/01/archeologo_lavoro.pdf
Un particolare ringraziamento alla formatrice di COPERECO, Prof.ssa Gabriella Ravizza
