text Bogor IPB 2000 xvi, 175p; ill; 22 cm xvi, 175p; ill; 22 cm RUBBER PRODUCTION EXPORTS NORTH SUMATERA 633.912 633.912 INLIS000000000008452 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)