Tampubolon, Omar Farrakhan text Batam Yayasan Cendikia Mulia Mandiri 2025 Cet. 1 viii, 137 hlm ; 14,8 x 21 cm Omar Farrakhan Tampubolon Pemasaran Digital 658.872 658.872 TAM p 978-634-7380-37-1 20260305094536 INLIS000000000004964 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)