@The Greatest Tamil Science
https://tamilscience.in/
https://www.youtube.com/channel/UCHZykgyk8Ny2fAIm-3sxCkA?sub_confirmation=1
Dr.C.K.Nandagopalan
9382829551
The Greatest Tamil Science.
https://www.youtube.com/watch?v=UTPNPVdINPo&list=PL91BUNOwXj6wgKtHOSfLMwQLHMPxv3Q2G&t=0s