text Yogyakarta Universitas Janabadra Yogyakarta 2005 xii, 66 lembar ; 29,5 cm / Ratri Nugroho Skripsi Fakultas Pertanian Bibliografi: hlm. 65-66 Ekonomi Pertanian 338.1 SK 338.1 Rat A YOPDYOG 20150813111834.0 INLIS000000000010048 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)