na INLIS000000000005824 20150119115308.0 a ||| | 170609| ||| | 979-7461-585-4 0010-011500000003829 808.50300000000004 irwanto focused group discussion [ FGO] sebuah pengantar praktis 1 Jakarta Yayasan obor indonesia 2006 0026/8/b272/2008