text Jakarta Balai Pustaka 1981 Cetakan : 1 ind 128 hlm. : ilus. ;21 cm. Ilmu Pengetahuan Umum 001 20130515163131 INLIS000000000006599 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)