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. 2016 Mar 23;3(3):150690. doi: 10.1098/rsos.150690

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© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 18. — Maps of the diversity of sound tags for each street segment in London (a) and Barcelona (b). Only segments with five or more tags are displayed.