A Purba, Simon P Ginting, Z Poeloengan, K Simanihuruk Dan Junjungan text J. Penelitian Kelapa Sawit 1995 20190919011013 INLIS000000000000203 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)