On the human rights aspects of minority language use I strongly recommend Tove Skutnabb-Kangas' book "Linguistic Genocide in Education or Worldwide Diversity and Human Rights?" (Mahwah, New Jersey: Lawrence Erlbaum Associates, 2000), http://www.amazon.com/exec/obidos/ASIN/0805834680/ref=ed_oe_p/103-7239221-8176636 Bill