@book{icrisat493,
       publisher = {International Center for Agricultural Research in the Dry Areas},
          editor = {N van Duivenbooden and M Pala and C Studer and C L Bielders},
         address = {Aleppo, Syria},
            year = {1999},
           title = {Efficient soil water use: the key to sustainable crop production in the dry areas of West Asia, and North and Sub-Shararan Africa: proceedings of the Workshop, Niamey, Niger, 26-30 April 1998 and proceedings of the Workhop, Amman, Jordon, 9-13 May 1999},
             url = {http://oar.icrisat.org/493/}
}