Audience Response Systems in Helmsdale #Helmsdale https://t.co/eU2ZnkLt3l
Audience Response Systems in Helmsdale #Helmsdale https://t.co/eU2ZnkLt3l
— Audience Response (@ukaudience) October 1, 2019
source https://audienceresponsesystemsuk.tumblr.com/post/188072107718
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