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022 0 _a0022-4561
040 _aMX-TxCIM
041 0 _aEn
043 _aUS
072 0 _aE14
072 0 _aP36
082 0 4 _a88-039158
100 1 _aEl Ashry, M.T.
245 0 0 _aSustaining Africa's natural resources
260 _c1987
340 _aPrinted
500 _aill. references
546 _aEnglish
595 _aAC
650 1 0 _aAfrica south of Sahara
650 1 7 _aAgricultural development
_gAGROVOC
_2
_91002
650 1 0 _aArid zones
_92024
650 1 0 _aDeforestation
650 1 0 _aErosion
_91961
650 1 0 _aNatural resources
650 1 0 _aPollution
650 1 0 _aResource conservation
650 1 0 _aResources
650 1 0 _aSemiarid zones
700 1 _aRam, B.J.,
_ecoaut.
773 0 _tJournal of Soil and Water Conservation
_n88-039158
_gv. 42, no. 4, p. 224-227
942 _cJA
999 _c15432
_d15432