: Liters (Litres.ru) carries V. Ya. Korovina's works in formats like FB2, EPUB, and PDF, allowing for offline reading on most mobile apps and e-readers.
You can find the "Literature. 5th Grade" (parts 1 and 2) through several official and educational platforms: : Liters (Litres
When downloading for an e-reader, the choice of format depends on your device: : Liters (Litres
: The most reliable source is the Prosveshcheniye Mediateka , which offers the official electronic form of the textbook (E-form). : Liters (Litres