XXI a. pradžios lietuvių tarmės: geolingvistinis ir sociolingvistinis tyrimas. Žemėlapiai ir jų komentarai, red. D. Mikulėnienė, V. Meiliūnaitė, Vilnius: Lietuvių kalbos institutas, Leidykla Briedis, 2014, 459 ss.

This text is a review of the Lithuanian language monumental work entitled XXI a. pradzios lietuviu tarmes: geolingvistinis ir sociolingvistinis tyrimas. Zemelapiai ir ju komentarai published in Vilnius in 2014. It is the result of long-lasting studies by famous linguists conducting research on the Lithuanian dialects, on the Polish language of the Northern Borderlands and on the Belarusian and Russian languages in Lithuania. The publication presents some theoretical aspects of contemporary dialectological research in Lithuania, geolinguistic research in Lithuania, geolinguistic situation of the Lithuanian dialects in the 21st century and the optimisation of the field study points, description of other languages and dialects spoken in Lithuania (the Polish and Russian languages, the Belarusian dialects) and the dynamics of dialectal changes. The publication under review is of paramount importance for the Lithuanian dialectology - not only enormous and valuable dialectal material was collected but also its professional linguistic analysis was carried out.