Les cookies assurent le bon fonctionnement de nos services. En utilisant ces derniers, vous acceptez l'utilisation des cookies.En savoir plusOK books.google.fr - In the global economy, linguistic diversity influences economic and political development as well as public policies in positive and negative ways. It leads to financial costs, communication barriers, divisions in national unity, and, in some extreme cases, conflicts and war--but it also produces benefits...https://books.google.fr/books/about/How_Many_Languages_Do_We_Need.html?hl=fr&id=4QX8ri2o1TUC&utm_source=gb-gplus-shareHow Many Languages Do We Need?