

The PIV-1 semiconductor radio-isotope device for engineering-geological and hydro-technical projects.
- Categories: Science & Technology
- Location: Russia
- Event date: 12.06.1967
- Date published: 12.02.2020
- Author: Nikolai Pashin
- Credit: Sputnik
- Original: A67-17829, 6x6 film
- Media: JPEG, 4465x3543px, 6.7Mb