text Westport AVI Publishing 1979 3 rd printing Ind ix, 356 p.: ill.; 23 cm. ix, 356 p.: ill.; 23 cm. ROTH, L.O. AGRICULTURAL ENGINEERING 631.4 631.4ROTi INLIS000000000011019 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)