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kat1031 September 4 2016, 04:09:48 UTC
Thanks for this. I'm teaching a segment on Tesla and Edison next week and I plan on using this in my class.

Excellent timing!

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commiesattack October 10 2016, 17:22:42 UTC
I'm happy to be of service. :)

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cybastov November 16 2016, 03:36:18 UTC
Настроение

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