399 NE Spanish River Blvd
Boca Raton, FL 33431
Just off campus, this bookstore has, among other things, a nice collection of new and used advanced mathematics books.
They have ordered many books especially for the conference.
It is worth checking out their selection. They will consider any used books for purchase or trade.
CAMBRIDGE UNIVERSITY PRESS: http://www.cambridge.org/us/knowledge/other_subject/item2267800/?site_locale=en_US
CRC PRESS: http://www.crcpress.com/
PRINCETON UNIVERSITY PRESS: http://press.princeton.edu/math/