Математичний аналіз і диференціальні рівняння вивчаю САМ

I smile that I could unite to the entire world. It is a little about myself: I am 53 years old. I live in USA, I've married fiew years ago. I have two kids - a son, and the daughter. I live in a city in east Europe. I'm working at the college. I really wish I'm useful in some way here. My site:...