Intermediate level text Jakarta Gramedia Pustaka Utama 2006 Cet. 1 ind xix, 302 hlm ilus 21 cm Sutanto Leo Bibliografi : hlm. 301-302 Bahasa Inggris 420 979-22-1803-3 20090227025135.0 YOGYA-02090000036560 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)