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.
https://www.bennubook.com/book/155413/کتاب-راهنمای-سنجش-و-تحقیقات-اجتماعی-اثر-دلبرت-میلر-ناشر-نشر-نی