text Bogor Balai Penelitian Perkebunan 1989 iii, 33 p. : ill ; 21 cm KARET PEDOMAN TEKNIS VULKANISAT 678058 678058 INLIS000000000004885 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)