text Jakarta Akedemika Pressindo 1991 x, 211 p. : ill ; 20 cm PERTANIAN-SUMBERDAYA SUMBERDAYA SUMBERDAYA-PERTANIAN 631.95 631.95 INLIS000000000004895 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)