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DuBroy M. Installing Noise Activated Warning Signs in Library Quiet Spaces Does Not Appear to Reduce Actual or Perceived Noise Levels. EBLIP [Internet]. 2019 Dec. 12 [cited 2024 Dec. 13];14(4):174-6. Available from: https://journals.library.ualberta.ca/eblip/index.php/EBLIP/article/view/29625