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*1001 $aStocking, Michael$0(NO-TrBIB)90615062$_122883000
*24510$aLand degradation and rehabilitation :$bresearch in Africa 1980-1990: retrospect and prospect$cMichael Stocking
*260  $aLondon$bInternational Institute for Environment and Development$c1992
*300  $a31 s.$bill.
*4901 $aIssues paper / Dryland Networks Programme$v34
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