Репост из: Books
dokumen.pub_problem-solving-tactics-978-1-876420-75-8.pdf
Matematik olimpiadalarga tayyorlanuvchilar uchun yana bir kitob. Shunchaki ajoyib. Bemalol shu kitobni tugatib upper-intermediate darajada bo'lish mumkin.
https://t.me/BoyBooks
https://t.me/BoyBooks