000 01186nam a2200277 a 4500
008 240221s1976^^^^sw^a^^^^^^^^^^000^0^eng^^
020 _a9154602122
035 _aMX001002229944
040 _aDLC
_bspa
_erda
_cDLC
_dMX-MxUNAM
050 0 _aGB618.82
_bR36
100 1 _aRapp, Anders,
_eautor
245 1 0 _aCan desert encroachment be stopped? :
_bA study with emphasis on Africa /
_cA. Rapp, H. N. Le Houérou and B. Lundholm, (editors)
264 1 _aStockholm :
_bSwedish Natural Science Research Council,
_c[1976]
300 _a241 páginas :
_bilustraciones
336 _atexto
_2rdacontent
337 _asin medio
_2rdamedia
338 _avolumen
_2rdacarrier
490 0 _aEcological bulletins ;
_vno. 24
500 _a"Report published in cooperation between the United Nations Environment Programme (UNEP) and the Secretariat for International Ecology, Sweden (SIES)"
650 0 _aDesertificación
_zÁfrica
650 0 _aDesertificación
_zCercano Oriente
650 0 _aRegiones áridas
_zÁfrica
650 0 _aAgricultura de regiones áridas
_zCercano Oriente
700 1 _aLe Houérou, H. N.,
_q(Henri Noël),
_eautor
700 1 _aLundholm, Bengt,
_eautor
999 _c15741
_d15741