00513nam a2200169   450000500170000000800040001702000150002104000090003605000180004524501110006326000610017430000270023550000180026265000230028070000180030371000220032120150826155846.0000  a9966410422  aUOEL  aSD627b.R4D42  aTaking Root :bRevegetation in semi- Arid kenyacedited by peter de groot Alison Field Juma  David O. Hall  aNairobi ;bAfrican Center for Technology Studiescc1992.  axii, 105 p.  :bill. ;  ainclude index  aphysical Geography  aHall O. David  aJuma Field Alison