text Bandung Tarsito 1990 Ed. 1 ind II, 156 hlm ilus.lamp 21 cm J. Sitorus Indeks Bibliografi : hlm. 148 Pendidikan - penelitian 370.78 20090227022623.0 YOGYA-02090000016251 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)