Radlov laid the groundwork for Turkic lexicography, dialectology, historical textology, paleography, and comparative-historical linguistics, leaving an indelible mark on the study of Turkic languages and cultures. His pioneering efforts in lexicography included compiling four volumes of a comparative dictionary of
Turkic languages (published from 1893 to 1911) and preparing a dictionary for Old Uyghur texts, which, though unpublished, formed the foundation for the Old Turkic Dictionary (Древнетюркский словарь, 1969) through his meticulously curated card index. In
dialectology, Radlov systematically collected and published dialect records from various Turkic ethnic groups, achieving the first classification of
Old Turkic dialects. In the realm of comparative-historical linguistics, Radlov broke new ground with the first study of Turkic comparative phonetics, drafted the earliest grammatical sketch of the language of the Orhon-Yenisei inscriptions, explored the origins of the
Yakut language, and characterized the phonetic and morphological structure of Turkic languages as
agglutinative. == Anti-Radlov campaign ==