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*035  $a(NO-LaBS)15122115(bibid)
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*1001 $aBarbier, Edward B.$0(NO-TrBIB)90137793$_16090900
*24514$aThe economics of controlling degradation :$brehabilitating gum Arabic systems in Sudan$cEdward B. Barbier
*260  $aLondon$bLondon Environmental Economics Centre$c[1990]
*300  $a28 s.
*4901 $aLEEC paper$v90-03
*830 0$aDiscussion paper (London Environmental Economics Centre)$v90-03$w999318997964702201$_29790800
*901  $a80
*999  $aoai:nb.bibsys.no:999602546334702202$b2021-11-14T20:36:26Z$z999602546334702202
^