I attach a list of general book search services plus a list of Japanese in print and o.p. booksellers that a colleague gave me for searching a particular title printed in Japan.  At least some of the latter have some functionality with Roman script titles.  All the links seem to be active as of today, 03-31-11.

Allen

Allen W. Thrasher, Ph.D.

Senior Reference Librarian and Team Coordinator

South Asia Team

Asian Division

Library of Congress

Washington, DC 20540-4810

USA

tel. 202-707-3732

fax 202-707-1724

The opinions expressed do not necessarily reflect those of the Library of Congress.