Challenges, Opportunities, and Trade - Offs the World Bank text Washington DC The World Bank 2006 xx; 87p ill; 23cm LAND MANAGEMENT SUSTAINABILITY WB. 631.4 WB. 631.4 979-0-8213-6597-7 INLIS000000000006227 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)