Bookselling is the commercial trading of books, the retail and distribution end of the publishing process. People who engage in bookselling are called booksellers or bookmen. The founding of libraries in 300 BC stimulated the energies of the Athenian booksellers. In Rome, toward the end of the republic, it became the fashion to have a library, and Roman booksellers carried on a flourishing trade.
More at: Bookselling