text Bogor IPB Ind viii, 45 p.: ill.; 30 cm. viii, 45 p.: ill.; 30 cm. INSTITUT PERTANIAN BOGOR. Fakultas Pertanian TRAVELS SUMATRA 91 (921.24) 91 (921.24)INSl INLIS000000000007648 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)