Science March SF
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/59473516@N00">TJ DeGroat</a> from San Francisco, CA, Los estados unidos
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/tjdegroat/34050869142/">Science March SF</a>