How to retrieve book's information in XML/JSON from library of congress by ISBN
问题 The Library of Congress has a site to search books by ISBN. A simple way to retrive book's information is using a URL like: http://lccn.loc.gov/2009019559/mods where it returns a XML structure that may parse easily. The URL requires a unique LCCN number in the the following format: http://lccn.loc.gov/[lccn]/mods I have a batch of books that has ISBN encoded in barcode. How may I retrieve/convert ISBN to LCCN in order to retrieve the XML data of the book? 回答1: You can use the SRU catalog from