00355nam a2200121Ia 4500080001800000040001600018245008400034260004700118500001400165010000900179011003600188010000900224  a504.03 ADV en  aBIEFCVbPor  aEnvironmental change in the West African Sahel/ Advisory Committee on the Sahel  aWashington:bNational Academy Press,c1984  aInv. 2016  atrue  aAdvisory Committee on the Sahel  atrue