End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
http://yoozfile.ir/file/49199/نمونه-سوالات-13-فصل-کتاب-سنجش-و-اندازه-گیری-دکتر-سیف