text Bogor Institute for Humanistic Sciences and Engineering 1989 vi, 35 p.: ill.; 21 cm. ILMU PENGETAHUAN UMUM 1 1 INLIS000000000000564 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)