Libras, Brazilian Portuguese sign language, is officially recognized as a legal means of communication in Lei 10.436. Brazilian Government. [2015-07-23]. (原始内容存档于2010-09-10).
Libras, Brazilian Portuguese sign language, is officially recognized as a legal means of communication in Lei 10.436. Brazilian Government. [2015-07-23]. (原始内容存档于2010-09-10).