Audience Response Systems in Lisburn #Lisburn https://t.co/hxK4gJbbu6
Audience Response Systems in Lisburn #Lisburn https://t.co/hxK4gJbbu6
— Audience Response (@ukaudience) January 9, 2020
source https://audienceresponsesystemsuk.tumblr.com/post/190158643198
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