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*24500$aCan desert encroachment be stopped? :$ba study with emphasis on Africa$cA. Rapp, H. N. Le Houérou and B. Lundholm (editors) ; report published in cooperation between the United Nations Environment Programme (UNEP) and the Secretariat for International Ecology, Sweden (SIES)
*260  $aStockholm$bStatens naturvetenskapliga forskningsråd$c1976
*300  $a241 s.
*4901 $aEcological bulletins$v24
*650 7$aAfrica$2agrovoc$_186819200
*650 7$aControl methods$2agrovoc$_185519500
*650 7$aDesertification$2agrovoc$_187440500
*650 7$aDeserts$2agrovoc$_187913900
*7001 $aLe Houérou, Henry Noël$0(NO-TrBIB)90369112$_87203200
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*7001 $aRapp, Anders$d1927-$0(NO-TrBIB)90302093$_13402200
*7102 $aSecretariat for International Ecology, Sweden$0(NO-TrBIB)90661164$_100988900
*7102 $aUnited Nations Environment Programme$0(NO-TrBIB)90133126$_17398100
*830 0$aEcological bulletins (trykt utg.)$x0346-6868$v24$w998341149254702201$_17769500
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