book_detail = json.load(urllib2.urlopen(book['href']))
xml_text = urllib2.urlopen(book_detail['xml']).read()
info = BookInfo.from_string(xml_text)
book_detail = json.load(urllib2.urlopen(book['href']))
xml_text = urllib2.urlopen(book_detail['xml']).read()
info = BookInfo.from_string(xml_text)