Elements of Number Theory by I.M. Vinogradov ( VERSION ENGLISH AND RUSSIAN)

 LINK ORIGINAL EN LA WEB
https://archive.org/details/ElementsOfNumberTheory
DOWNLOAD
https://archive.org/download/ElementsOfNumberTheory/Vinogradov-ElementsOfNumberTheory.pdf

VERSION RUSSIAN
И.М.Виноградов
ОСНОВЫ ТЕОРИИ ЧИСЕЛ

LINK BOOK
http://mathscinet.ru/files/VinogradovIM.pdf