Library	Publisher/Bookshop
WWW Virtual Library(USA) Congress Library(USA) Z39.50 American Library Association(USA) British Library(UK) Hong Kong Libraries ìíÜâÏÐüåÓñßöν ±¹¸³Áß¾Óµµ¼­°ü ±¹È¸µµ¼­°ü ±¹³»´ëÇеµ¼­°ü	Amazon Bookstore(USA) Bn.com(USA) Industrial Press Bookshop( USA) BookWire Bookshop(USA) WHSmith Bookshop(UK) Online Bookshop(Japan) ±³º¸¹®°í ¿µÇ³¹®°í