The Collaborative International Dictionary of English v.0.48:

Bibliopole \Bib"li*o*pole\, n. [L. bibliopola, Gr. ?; ? book + ?
   to sell: cf. F. bibliopole.]
   One who sells books.
   [1913 Webster] Bibliopolic

WordNet (r) 3.0 (2006):

bibliopole
    n 1: a dealer in secondhand books (especially rare or curious
         books) [syn: bibliopole, bibliopolist]