text Yogyakarta BPFE 1992 Ed. 1, cet. 2 ind viii, 111 hlm.;ilus.;27 cm. Penulisan skripsi 20150225131621.0 YOGYA-02110000006467 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)