خواندن بعدی
Before the spread of the Internet, everyone dealt with letters and stamps. One of the pastimes of that time was to separate the stamp from the envelope and keep it. I also had a stamp album when I was a …
Below is the ASTM A17 (the oldest standard I have) which withdrawn in 1945. The American Society for Testing and …
یک ماهی هست پس از پایان کار، قدمزنان خودم را به اول خط بی آر تی میرسانم و روی یکی …
In these 25 years that have passed since the beginning of my career, I have the pleasure of interacting both …
