Audience Response Systems in Lisburn #Lisburn https://t.co/S8BHLRmzL0
Audience Response Systems in Lisburn #Lisburn https://t.co/S8BHLRmzL0
— Audience Response (@ukaudience) October 23, 2017
source https://audienceresponsesystemsuk.tumblr.com/post/166722214143
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