The collection of selected works of the largest linguist of the 20th century, an active participant in the Prague linguistic circle and the founder of a number of new branches of modern linguistic science (phonology, morphology, historical typology) contains the most important works of the scientist in the field of general, Indo-European, Slavic and Caucasian linguistics, as well as some of his works related to related areas of knowledge: poetics, folklore and musicology.