Technologies of cleaning and disinfection of wells
12 August 2022
<p style="text-align: center;"><iframe width="100%" height="500" style="overflow: hidden; height: 500; width: 100%;" frameborder="0" src="https://drive.google.com/file/d/1U8mly0rcMqoMxf3joed3ckZziEXOfUSJ/preview" allow="autoplay"></iframe></p>