PUSAT Penelitian Kelapa Sawit. text Medan PPKS. 1997 ind iv, 53. p , : ill. ; 23cm. ELLAIS GUINENSIS RESEARCH AINSTITUTION PLANNING 633.855.34.001.14 633.855.34.001.14 ISBN : 200129 20200129160857.0 INLIS000000000000277 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)