productivity and equity text Wad Medani Sudan Publicity 1984 150 p. : ill ; 21 cm IRRIGATION IRIGASI SUDAN WTER DISTRIBUTION 631.67 631.67 INLIS000000000005603 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)