Astro-Calendar: 2020 July / 50 Years of Video CallingBlog-Post: 50th anniversary of commercial video telephone service.MORE INFORMATION: CLICK ON IMAGE OR LINK --- LIKE THIS POST? PLEASE SHARE!Link >>> https://spacewatchtower.blogspot.com/2020/07/astro-calendar-2020-july-50-years-of.html
Calendar: Link >>> http://buhlplanetarium4.tripod.com/astrocalendar/2020.html#jul
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Astro-Calendar: 2020 July / 50 Years of Video Calling
July 1 marks the 50 th anniversary of commercial video telephone service. It was on that date in 1970 that serv...
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