text Jakarta Karya Unipress 1987 ind xiv, 449 p. : ill ; 21 cm PERTANIAN EKONOMI EKOFARMING 63 63 EKO 250620 20250620025117 INLIS000000000000317 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)