text Yogyakarta Gadjah Mada University Press 1990 vi, 769 p. : ill ; 21 cm PERTANIAN USAHATANI MESIN MEKANISASI PERTANIAN 631.3 631.3 979-420-172-3 INLIS000000000000333 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)