text Rome FAO 1990 Ind vi, 124 p. : ill. ; 30 cm.-- vi, 124 p. : ill. ; 30 cm.-- Bibl. p. 120-124 GODWIN, R.J. TILLAGE EQUIPMENT ENGINEERING 631.31 92-5-102542-8 INLIS000000000002727 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)