The discussed and reviewed book may be considered not merely a collection of word studies, but also a monograph dealing with lexical language contacts in the Polish-Eastern Slavic linguistic borderland. The authors examine more than 30 dialect words against the background of imposing Polish and East Slavic linguistic material, utilise the extensive subject literature, and apply modern dialectological research and language contact theory methods. Their main academic achievements include a precise delineation of the extent of East Slavic lexical borrowings in Polish dialect and a convincing verification of the criteria used to determine them. These efforts also allowed them to discover relict Polish-East Slavic references, previously considered borrowings from Ruthenian languages, in the examined lexical material. The publication, due to its advantages in material, theory and methodology, should serve as a model of research on dialectal linguistic borderlands for Slavic language studies. I believe that the book of Dorota Krystyna Rembiszewska and Janusz Siatkowski should deserves to be rated highly.