000 00346nam a2200121Ia 4500
008 140224s9999 xx 000 0 und d
082 _a577.4:631.474(662) L5
245 _aThe Sahel; ecological approaches to land use; MAB technical notes.
260 _aParis
_bUNESCO
_c1975
300 _a99p.
650 _aSahel-climate,Sahel-soil
942 _cBK
999 _c96789
_d96789