The manual is intended for work with foreign servicemen who have reached a basic level of Russian language proficiency. The main purpose of the manual is to promote the development of students' speech on the material of the sublanguage of the specialty. Each lesson has a standard structure and contains lexical tasks, tasks aimed at mastering the constructions of the scientific style of speech, educational adapted texts, post-text tasks, materials for dictations, as well as additional texts that have undergone minimal adaptation, which serve to develop reading skills and expand students' vocabulary .