Introduzione Duolingo

http://duolingo.com -- Con Duolingo impari una lingua completamente gratis, mentre traduci l'Internet.nnpowered by http://alugha.com

LicenseDefault alugha License

More videos by this producer

PSI Image Movie

PSI AG develops and integrates complete solutions, on the basis of its own software products, for the management of energy networks (electricity, gas, oil, heat), production management (metals, automotive, mechanical engineering, mining, logistics) and infrastructure management for transport and saf