Radiation Safety / Cordon - Off distance calculation

[@fakhrealam6300]

Thank you very much sir for sharing such a good knowledge..

[@mdazhar3917]

Thnks for information

[@amararam443]

Radiation safety good video

[@ganihussain9544]

Thank you sir.you are a very good teacher

[@BABLUKUMAR-mh5my]

Thanks for this information.

[@user-tara123]

Very nice

[@gurbakshsingh2150]

Valuable Information Sir

[@SanjayYadav-vp5ol]

Co 60 ka values 1.3 hota hai

[@Mukesh_singh7631]

Please sir Hind me btao