Supriyono text Ungaran Trubus Agriwidya 1997 viii,58 hal. : Ilus. ; 21 cm Pertanian 644.76 979-661-027-2 210322 20210322160421 INLIS000000000003132 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)