require 'rubygems'
require 'zip'
-require 'author'
-require 'classification'
-require 'cover'
-require 'store'
+require_relative 'author'
+require_relative 'classification'
+require_relative 'cover'
+require_relative 'store'
class Book
@@DC_NS_URL = 'http://purl.org/dc/elements/1.1/'