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Mukesh damor
6 months ago
nice......dialysis Preparation sir
I am dialysis technician
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Pradeep Sharma
6 months ago
🙂
Pavan Kachala
2 years ago
0 plays and 21 upvotes
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Neha Siwal
2 years ago
Good morning mam..mam apna esh viedo m radio use USA 1931 or tokayo 1934 bola but viedo ma tokayo map ka pass 1931 likha hu ..mam please confuse haan Ush please ek bar bata da AP .. thank you..mam
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Rijwan ahmed
2 years ago
Thankyou mam please continue its always give new crazy things which i dont know
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Joydeep Pal
2 years ago
audible sound is too low..pls enhance a bit
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Abhishek dwivedi
2 years ago
thanks mam for such a wonderful knowledge.
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AT&T Jan 7th , 1927 First commercial transatlantic telephone service
New York London
0 Walter S Gifford Sir Evelyn Murra
Bell ENGINEERING
In 1916 first two-way communication happened with a ship at sea On
1926 First two-way conversation across the Atlantic
1927 First commercial transatlantic telephone service
SS Leviathan, 1929 First ocean liner to offer radio telephone service
Hawaii Started in 1931
Tokyo Started in 1931