Techniques (in research) ; Research techniques ; Areallinguistik; Geolinguistik; Geolinguistics; Linguistic geography ; Kartographie (linguistische) ; Cartography (linguistic) ; Linguistic atlas ; Sprachgeographie (lex.) ; Linguistic geography (lex.) ; Wortatlas; Word atlas; Word geography ; Balkan Indo-European languages ; Baltic languages ; Germanic ; Gemeinromanisch; Common Romance; Romance ; Slavic languages ; Ural-Altaic language