промилле 🎓²

https://business_ru_fr.fracademic.com/8971/%D0%BF%D1%80%D0%BE%D0%BC%D0%B8%D0%BB%D0%BB%D0%B5

business_ru_fr.fracademic.com/8971/промилле





via Academic summary https://ift.tt/2U7Xzxr