Kemala, Syafril text Bogor Badan Penelitian dan Pengembangan Pertanian 2007 ind id 154p. : ill. ; 21 cm PIPER NIGRUM AGRICULTURAL ECONOMICS FARMERS 633.841 633.841 KEM s 221227 20221227103334 INLIS000000000001676 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)