Wolfgang Wölck, PhD has been expert scientific adviser to the "Euromosaic’" surveys of European minorities and to the current multinational research project on linguistic diversity (LINEE) of the European Union. His publications began with a monograph on Scottish-English diglossia, and include a series of reports on his survey of Quechua-Spanish bilingualism in Peru; a comparative grammar of Quechua; and several studies of American immigrant "ethnolects." He continues working on contact linguistic surveys, especially on sampling ("community profiles") and language attitude studies.