text Jakarta Haji Masagung 1987 Cet. 17 ind xii, 158 hlm 21 cm Sondang P. Siagian Bibliografi :149-151 Indeks Manajemen 658.001 658.001 Sia P 979-412-001-4 20151104132911.0 YOGYA-02090000026583 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)