Purjiyanta, Eka text Bandung Azka Press 2007 ind Eka Purjiyanta Olimpiade Sains Panduan Olimpiade 500 500 PUR l 978-979-1211-02-4 251202 20251202105720 INLIS000000000000182 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)