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020 _a 9988611056
040 _aLC
_bEng.
_cLC
_dLC
050 _aS934.A357.
_bR21
100 _qSlaymaker, Tom ; Blench, R.
245 _aRethinking natural resource degradation in Sub-Saharan Africa :
_b policies to support sustainable fertility management, soil and water conservation among resource-poor farmers in semi-arid areas
_c/ edited by Tom Slaymaker ; Roger Blench
260 _aTamale-Ghana :
_bCyber Systems,
_c 2002.
300 _a2 volumes :
_bill., col. ;
_c25cm
600 _x Conservation of natural resources -- Africa, Sub-Saharan.
610 _xSoil degradation -- Africa, Sub-Saharan.
630 _x Water conservation -- Africa, Sub-Saharan.
942 _2lcc
_cBK